Search

We present new Sr-Nd-Pb-Hf isotopic data on mafic lavas from the Sivas, Develidag, Erciyes, and Erkilet volcanic complexes in central Turkey and Tenchirek in eastern Turkey to evaluate the mantle sources for volcanism in the context of the geodynamic evolution of the Anatolian microplate. Early Miocene through Quaternary volcanism in Western Anatolia and latest Miocene through Quaternary activity in Central Anatolia were dominated by contributions from two distinct source regions: heterogeneous metasomatized or subduction-modified lithosphere, and roughly homogeneous sublithospheric ambient upper mantle; we model the source contributions through mixing between three end members. The sublithospheric mantle source plots close to the Northern Hemisphere reference line (NHRL) with radiogenic Pb-206/Pb-204 of similar to 19.15, while the other contributions plot substantially above the NHRL in Pb isotope space. The lithospheric source is heterogeneous, resulting from variable pollution by subduction-related processes likely including direct incorporation of sediment and/or melange; its range in radiogenic isotopes is defined by regional oceanic sediment and ultrapotassic melts of the subcontinental lithospheric mantle. The geochemical impact of this contribution is disproportionately large, given that subduction-modified lithosphere and/or ocean sediment dominates the Pb isotope signatures of mafic Anatolian lavas. Subduction of the Aegean or Tethyan seafloor, associated with marked crustal shortening, took place throughout the region until ca. 16-17 Ma, after which time broad delamination of the thickened lower crust and/or the Tethyan slab beneath Central Anatolia allowed for sediment and/or melange and slab-derived fluids to be released into the overlying evolving modified mantle. Aggregation of melts derived from both mantle and lithospheric domains was made possible by upwelling of warm asthenospheric material moving around and through the complexly torn younger Aegean-Cyprean slab that dips steeply to the north beneath southern Anatolia.

Pseudoacanthocircus mocki Kozur & Mostler, 1990 (Fig. 10U) Pseudoacanthocircus mocki Kozur & Mostler, 1990: 209, pl. 1, fig. 1; pl. 10, fig. 9. — Dumitrica & Hüngerbühler 2017: pl. 8, figs 5, 8. OCCURRENCE. — Lower Jurassic, Hettangian-upper Pliensbachian of Bavaria, Germany; Mersin Mélange, NW of Mersin city, southern Turkey.

Laxtorum breve Tekin, n. sp. (Fig. 12 D-J) urn:lsid:zoobank.org:act: AAC22989-AF44-439E-8E99-6493848E6229 Laxtorum sp. – Aita & Spörli 1992: pl. 5, fig. 12. HOLOTYPE. — Sample Orbuk-32, HU.JMB.0157 (Fig. 12D). PARATYPES. — HU.JMB.0158 (Fig. 12G), HU.JMB159 (Fig. 12H), JMB.0160 (Fig. 12I), HU.JMB161 (Fig. 12J). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — From the Latin brevis-e – short, brief, due its short shell. OCCURRENCE. — Lower Jurassic, lower Sinemurian of Auckland, New Zealand and Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on seven specimens, in µm). — Length of horn: 84-120 (holotype: 100, average: 105.7); Maximum length of test: 132-158 (holotype: 158, average: 141.1); Maximum width of test: 120-168 (holotype: 125, average: 136.1). DESCRIPTION Test short with three post-abdominal segments. Cephalis hemisphaerical with a long horn. Horn needle-like, subcircular in transversal section, slightly decreasing in width distally and terminated in a sharp end. Rest of the test increasing in width very slowly, and decreasing in width at last segment. Collar, lumbar and following strictures not prominent, not visible at the surface of test. Surface of test covered with thick layer of silica with irregular surface. Test bears circular to subcircular pores of different sizes. REMARKS This species differs from Laxtorum hemingense Whalen & Carter in Carter et al. (1998: 80, pl. 25, figs 6-8, 13, 14, 24, 25; pl. 27, figs 5, 6, 16, 20) by having a shorter test with very long horn and indistinct circumferential ridges. It can be differentiated from Laxtorum obscurum Tekin, n. sp. by possessing a thin, long horn and longer test with more segments., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on pages 524-525, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["AITA Y. & SPORLI K. B. 1992. - Tectonic and palaeogeographic significance of radiolarian microfauna in the Permian and Mesozoic basement rocks of the North Island, New Zealand. Palaeogeography, Palaeoclimatology, Palaeoecology 96: 103 - 125. https: // doi. org / 10.1016 / 0031 - 0182 (92) 90062 - A","CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Genus Orbiculiformella Kozur & Mostler, 1978 TYPE SPECIES. — Orbiculiforma railensis Pessagno, 1977 by original desgination., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 513, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["KOZUR H. & MOSTLER H. 1978. - Beitrage zur Erforschung der mesozoischen Radiolarien. Teil II. Oberfamilie Trematodiscacea Haeckel 1862 emend. und Beischreibung ihrer triassischen Vertreter. Geologisch-Palaontologische Mitteilungen Innsbruck 8: 123 - 182."]}

Genus Laxtorum Blome, 1984 emend. Carter (1993) TYPE SPECIES. — Laxtorum hindei Blome, 1984 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 524, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["BLOME C. D. 1984. - Upper Triassic Radiolaria and radiolarian zonation from western North America. Bulletins of American Paleontology 85 (318): 1 - 88. https: // www. biodiversitylibrary. org / page / 28866200","CARTER E. S. 1993. - Biochronology and Paleontology of Uppermost Triassic (Rhaetian) Radiolarians, Queen Charlotte Islands, British Columbia, Canada. These de Doctorat, Universite de Lausanne Faculte des Sciences, Memoires de Geologie (Lausanne) 11, 177 p."]}

Genus Tetrapaurinella Kozur & Mostler, 1994 TYPE SPECIES. — Tetrapaurinella discoidalis Kozur & Mostler, 1994 by original designation. Tetrapaurinella sphaerica Tekin, n. sp. (Fig. 8 P-V) urn:lsid:zoobank.org:act: C4E6F19D-A746-43DA-9A55-5480C9F33969 HOLOTYPE. — Sample Orbuk-32, HU.JMB.0127 (Fig. 8P). PARATYPES. — HU.JMB.0128 (Fig. 8Q), HU.JMB.0129 (Fig. 8R), HU.JMB.0130 (Fig. 8S), HU.JMB.0131 (Fig. 8T), HU.JMB.0132 (Fig. 8U), HU.JMB.0133 (Fig. 8V). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — Due its sphaerical cortical shell. OCCURRENCE. — Lower Jurassic, upper Hettangian-lower Sinemurian of Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on seven specimens, in µm).- Maximum diameter of test: 100-140 (holotype: 138, average: 123.3); Length of the longest spine: 80-100 (holotype: 100, average: 93). DESCRIPTION Shell flat to slightly inflated, spongy consisting of several layers around the micropshaere and four primary spines at right angles situated in one plane or, sometimes, slightly inclined (Fig. 8P). Surface of the shell with numerous pores of different size. Primary spines needle-like, subcircular in transverse section, slightly gradually tapering, and pointed. REMARKS This species differs from the Triassic species Tetrapaurinella latispinosa Kozur & Mostler (1994: 77, pl. 16, fig. 9; pl. 17, figs 4, 6) by possessing a much smaller shell by comparison with primary spines and slightly larger pores.

Udalia dennisoni Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 7E) Udalia dennisoni Whalen & Carter in Carter, Whalen & Guex, 1998: 59, pl. 6, figs 11, 13-14, 17-19, 21-22. — Tekin 2002a: 185, pl. 3, fig. 2. — Bertinelli & Marcucci 2011: 408, pl. 1, fig. 18. ? Udalia sp. cf. U. dennisoni – Whalen & Carter in Carter, Whalen & Guex, 1998: pl. 3, fig. 12. OCCURRENCE. — Lower Jurassic, middle Hettangian-upper Sinemurian of Queen Charlotte Islands, British Columbia, Canada; Gran Sasso, central Apennines, Italy; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey.

Genus Danubea Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Danubea howardi Whalen & Carter, 1998 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 514, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Atalantria sp. A (Fig. 12O) OCCURRENCE. — Lower Jurassic, lower Sinemurian of Mersin Mélange, NW of Mersin city, southern Turkey. DESCRIPTION Test multicyrtid, increasing in width distally except the last segment. Last segment decreasing in width. Cephalis hemisphaerical, poreless with small, rudimentary, needle-like horn. Thorax to rest of segments, except the last one, subtrapezoidal. Last segment inverse subtrapezoidal in outline. Segments have two transverse rows of pores with hexagonal pore frames. REMARKS This specimen differs from Atalantria emmela (Cordey & Carter 1996: 67, pl. 24, fig. 13) by having a distally constricted test. It can be differentiated also from Atalantria epaphrodita (Cordey & Carter 1996: 446, pl. 1, figs 6, 7, 10, 11) by having a shorter test and cephalis with unbranched, needle-like horn.

Ares sutherlandi Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 13F, G) Ares sutherlandi Whalen & Carter in Carter, Whalen & Guex, 1998: 76, pl. 21, figs 3, 16, pl. 27, figs 1, 7.- Goričan et al. 2006: 44-45, pl. ARS02, figs 1-2. Ares sp. – Whalen & Pessagno 1984: pl. 1, fig. 12. Ares sp. A – Whalen & Pessagno 1984: 142, pl. 15, figs 6, 13. OCCURRENCE. — Lower Jurassic, lower Sinemurian-lower Lower Pliensbachian of Queen Charlotte Islands, British Columbia, Canada; Baja California Sur; Mexico; Mersin Mélange, NW of Mersin city, southern Turkey.

Praehexasaturnalis tetraradiatus Kozur & Mostler, 1990 (Fig. 10 L-M) Praehexasaturnalis tetraradiatus Kozur & Mostler, 1990: 195-196, pl. 6, figs 8, 9, 11, 12. — Carter 1994, pl. 1, fig. 19. — Carter et al. 1998: 54, pl. 14, figs 1, 2, 5, 6, 9, 10. — Whalen & Carter 2002: 108, pl. 5, figs 7, 11, 12. — Tekin 2002a: 184, pl. 2, fig. 10. — Goričan et al. 2006: 332-333, pl. SAT 01, figs 1-3. Pseudoheliodiscus (?) spp. – Whalen & Pessagno 1984: pl. 3, figs 12-13. Stauroacanthocircus quadratus – Yang & Mizutani 1991: 73, pl.3, fig.1, 6. Palaeosaturnalis tetraradiatus – Carter et al. 2010: pl. 1, fig. 1. OCCURRENCE. — Lower Jurassic, middle Hettangian – lower Lower Pliensbachian of Baja California Sur, Mexico; Bavaria, Germany and northern Hungary; northeast China; Queen Charlotte Islands, British Columbia, Canada; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey.

Droltus sp. aff. D. eurasiaticus Kozur & Mostler, 1990 (Fig. 11A, B) aff. Droltus eurasiaticus – Kozur & Mostler 1990: 223, pl. 17, figs 3-4. OCCURRENCE. — Lower Jurassic, lower Sinemurian of the Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. REMARKS This taxon differs from Droltus eurasiaticus by possessing a shorter and wider test., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 520, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["KOZUR H. & MOSTLER H. 1990. - Saturnaliacea Deflandre and some others stratigraphically important Radiolaria from the Hettangian of Lenggries / Isar (Bavaria, Northern Calcareous Alps). Geologisch-Palaontologische Mitteilungen Innsbruck 17: 179 - 248."]}

Genus Tozerium Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Tozerium nascens Whalen & Carter, 1998 by original designation. Tozerium orbuklukeliense Tekin, n. sp. (Fig. 9 P-R) urn:lsid:zoobank.org:act: D0FD13C2-4B21-4640-9815-2297D5FFBEB3 HOLOTYPE. — Sample Orbuk-32, HU.JMB.0142 (Fig. 9P). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — Named after its type locality. OCCURRENCE. — Lower Jurassic, lower Sinemurian of the Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. PARATYPES. — HU.JMB.0143 (Fig. 9Q), HU.JMB.0144 (Fig. 9R). DIMENSIONS (based on three specimens, in µm). — Maximum diameter of cortical shell: 110-128 (holotype: 110, average: 116); Maximum length of spine: 85-114 (holotype: 100, average: 99.6). DESCRIPTION Cortical shell small to medium-sized with four strong spines. Cortical shell sphaerical to subsphaerical composed of small to medium-sized polygonal (mainly trigonal to tetragonal) pore frames and large, subcircular pores at pore frame vertices. Spines prominent, robust, needle-like, subcircular in transversal section, decreasing in width gradually to its end. Length of spines approximately equal to diameter of cortical shell. REMARKS This species differs from Tozerium nascens (Carter et al. 1998: 44, pl. 1, figs 1, 7, 8, 13, 14, 18, 23, 24) by having a sphaerical, smaller cortical shell with smaller pore frames, large nodes at pore frame vertices and prominent, robust and longer primary spines., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 516, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Genus Beatricea Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Beatricea christovalensis Whalen & Carter in Carter, Whalen & Guex, 1998 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 508, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Crucella mijo De Wever, 1981 (Fig. 7P) Crucella mijo De Wever, 1981a: 35, pl. 4, figs 1-2; 1982b: 253, pl. 28, figs 1-3. — Suzuki et al. 2002: 176, fig. 7C. Crucella sp. A – Pujana 1996: 136, pl. 1, fig. 14. OCCURRENCE. — Lower Jurassic, middle Lower Pliensbachian-upper Pliensbachian of Gümüslü Unit, Lycian Nappe, NW of Antalya city and Mersin Mélange, NW Mersin city, southern Turkey; NE British Columbia; Argentina; North Peru. Crucella mirabunda Whalen & Carter, 2002 (Fig. 7Q, R) Crucella mirabunda Whalen & Carter, 2002: 106, pl. 1, figs 7, 11; pl. 2, figs 1, 8. — Goričan et al. 2006: 126-127, pl. CRU14, figs 1-2. Crucella sp. B – Hattori 1987: pl. 4, fig. 8. Pseudocrucella sp. A – Carter et al. 1988: 29, pl. 7, figs 8-9. OCCURRENCE. — Lower Jurassic, Pliensbachian-Middle Jurassic, Aalenian of Japan; Baja California Sur, Mexico; Queen Charlotte Islands, British Columbia, Canada; Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 510, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["DE WEVER P. 1981 a. - Hagiastridae, Patulibracchiidae et Spongodiscidae (Radiolaires Polycystines) du Lias de Turquie. Revue de Micropaleontologie 24 (1): 27 - 50.","SUZUKI H., PRINZ- GRIMM P. & SCHMIDT- EFFING R. 2002. - Radiolarien aus dem Grenzbereich Hettangium / Sinemurium von Nordperu. Palaontologische Zeitschrift 76: 163 - 187. https: // doi. org / 10.1007 / BF 02989855","PUJANA I. 1996. - A new Lower Jurassic Radiolarian fauna from the Neuquen Basin, centralwest Argentina, in XIII Congreso Argentino de Geologia, y Ii Congreso de Exploracion de Hidrocarburos, Actas: Buenos Aires, 13 al 18 de octubre de 1996. Asociacion Geologica Argentina: Instituto Argentino del Petroleo y del Gas: 133 - 142.","WHALEN P. A. & CARTER E. S. 2002. - Pliensbachian (Lower Jurassic) Radiolaria from Baja California Sur, Mexico. Micropaleontology 48 (2): 97 - 151. https: // doi. org / 10.2113 / 48.2.97","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p.","HATTORI I. 1987. - Jurassic radiolarian fossils from the Nanjo Massif, Fukui Prefacture, central Japan. Bulletin of Fukui Municipial Museum of Natural History 34: 29 - 101.","CARTER E. S., CAMERON B. & SMITH P. L. 1988. - Lower and Middle Jurassic radiolarian biostratigraphy and systematic paleontology, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 386: 1 - 110. https: // doi. org / 10.4095 / 126315"]}

Genus Canoptum Pessagno in Pessagno, Finch & Abbott, 1979. TYPE SPECIES. — Canoptum poissoni Pessagno, 1979 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 522, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["PESSAGNO E. A. JR, FINCH W. & ABBOTT P. L. 1979. - Upper Triassic Radiolaria from San Hipolito Formation, Baja California. Micropaleontology 25 (2): 160 - 197. https: // doi. org / 10.2307 / 1485265"]}

Genus Katroma Pessagno & Poisson, 1981 emend. De Wever (1982a) emend. Whalen & Carter in Carter et al. (1998) TYPE SPECIES. — Katroma neagui Pessagno & Poisson, 1981 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 528, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["PESSAGNO E. A. JR & POISSON A. 1981. - Lower Jurassic Radiolaria from the Gumuslu Allochthon of southwestern Turkey (Taurides Occidentales). Bulletin of the Mineral Research and Exploration Institute of Turkey 92: 47 - 69.","DE WEVER P. 1982 a. - Nassellaria (Radiolaires Polycystines) du Lias de Turquie. Revue de Micropaleontologie 24 (4): 189 - 232.","CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Acanthotetrapaurinella kennecottensis (Carter in Longridge, Carter, Smith & Tipper, 2007) Group (Fig. 8 A-H) Tipperella kennecottensis Carter in Longridge, Carter, Smith & Tipper, 2007: 163-164, pl. 2, figs 7, 11. Spongotrochus sp. – Carter 1994: pl. 1, fig. 7. — Carter & Hori 2005: pl. 1A, fig. 4; pl. 1B, fig. 4. Tozerium nascens – Tekin 2002a: 189, pl. 4, fig. 1. Acanthotetrapaurinella kennecottensis – Dumitrica et al. 2013: 318. OCCURRENCE. — Upper Triassic, Rhaetian-Lower Jurassic, lower Sinemurian of Queen Charlotte Islands, British Columbia, Canada; Inuyama Area, Japan; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey. REMARKS Acanthotetrapaurinella kennecottensis Group includes three different morphotypes: a. Subtetrahedral test with polygonal pore frames and long primary spines (e.g. Tipperella kennecottensis [Longridge et al. 2007: only pl. 7, fig. 7; Carter & Hori 2005: pl.1A, fig.4; pl.1B,fig.4]); b. Subtetrahedral test with polygonal pore frames and short primary spines(e.g. Tipperella kennecottensis [this study: Fig. 8 A-F); and c. Subsphaerical to subtetrahedral test with spongy meshwork (e.g. Spongotrochus sp. [Carter 1994: pl. 1, fig.7]; Tipperella kennecottensis [Longridge et al. 2007: pl.7 fig.11]; Tozerium nascens Whalen & Carter, 1998 [Tekin 2002a: 189, pl.4, fig.1]; Tipperella kennecottensis [this study: Fig.8 G-H])., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 512, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["LONGRIDGE L. M., CARTER E. S., SMITH P. L. & TIPPER H. W. 2007. - Early Hettangian ammonites and radiolarians from the Queen Charlotte Islands, British Columbia and their bearing on the definition of the Triassic-Jurassic boundary. Palaeogeography, Palaeoclimatology, Palaeoecology 244: 142 - 169. https: // doi. org / 10.1016 / j. palaeo. 2006.06.027","CARTER E. S. 1994. - Evolutionary trends in latest Norian through Hettangian radiolarians from the Queen Charlotte Islands, British Columbia. Geobios 17: 111 - 119. https: // doi. org / 10.1016 / S 0016 - 6995 (94) 80130 - 4","CARTER E. S. & HORI R. S. 2005. - Global correlation of the radiolarian faunal change across the Triassic-Jurassic boundary. Canadian Journal of Earth Sciences 42: 777 - 790. https: // doi. org / 10.1139 / e 05 - 020","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177","DUMITRICA P., TEKIN U. K. & BEDI Y. 2013. - Taxonomic study of the tetrahedral, pentagonal and hexagonal spongy spumellarian Radiolaria from the middle Carnian (Late Triassic) of the Koseyahya nappe (Elbistan, Se Turkey) and other Triassic localities. Palaontologische Zeitschrift 87 (3): 311 - 343. https: // doi. org / 10.1007 / s 12542 - 012 - 0160 - 2","CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Paronaella tripla De Wever, 1981 (Fig. 7W) Paronaella tripla De Wever, 1981a: 34, pl. 3, figs 5-6; 1982b: 248- 249, pl. 25 figs 3, 4. — Goričan et al. 2006: 310-311, pl. PAR20, figs 1-4. — O’Dogherty & Gawlick 2008: 75, pl. 1, fig. 26. Paronaella sp. B – Carter et al. 1988: 42, pl. 11, fig. 6. ? Paronaella sp. aff. P. tripla – Tekin 2002a: 181, pl. 1, fig. 14. OCCURRENCE. — Lower Jurassic, Pliensbachian-middle Jurassic, Aalenian of Queen Charlotte Islands, British Columbia, Canada; Austria;? Antalya Nappes, NE of Antalya Nappes and Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 512, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["DE WEVER P. 1981 a. - Hagiastridae, Patulibracchiidae et Spongodiscidae (Radiolaires Polycystines) du Lias de Turquie. Revue de Micropaleontologie 24 (1): 27 - 50.","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p.","O'DOGHERTY L. & GAWLICK H. J. 2008. - Pliensbachian radiolarians in Teltschengraben (Northern Calcareous Alps, Austria): A keystone in reconstructing the Early Jurassic evolution of the Tethys. Stratigraphy 5 (1): 63 - 81.","CARTER E. S., CAMERON B. & SMITH P. L. 1988. - Lower and Middle Jurassic radiolarian biostratigraphy and systematic paleontology, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 386: 1 - 110. https: // doi. org / 10.4095 / 126315","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177"]}

Genus Charlottea Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Charlottea amurensis Whalen & Carter, 1998 by original designation. Charlottea elegantissima Tekin, n. sp. (Fig. 9 J-L) urn:lsid:zoobank.org:act: 55CA8859-77C0-445D-81BF-D961D20F6D64 HOLOTYPE. — Sample Orbuk-32, HU.JMB.0139 (Fig. 9J). PARATYPES. — HU.JMB.0140 (Fig. 9K), HU.JMB.0141 (Fig. 9L). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — From the Latin elegantissima, most elegant, due its elegant test. OCCURRENCE. — Lower Jurassic, upper Hettangian-lower Sinemurian of the Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on three specimens, in µm). — Maximum diameter of cortical shell: 80-100 (holotype: 80, average: 90); Maximum length of spine: 80-100 (holotype: 90, average: 90). DESCRIPTION Test small, slightly inflated globular with three primary spines. Cortical shell with small to medium sized, trigonal to tetragonal pore frames with subcircular nodes at pore frame vertices. Primary spines thin, needle-like throughout their length, subcircular in transversal section, tapering gradually to the distal end. Length of primary spines approximately equal to the diameter of the cortical shell. REMARKS This species differs from Charlottea johnsoni (Carter et al. 1998: 38-39, pl. 3, figs 5, 10, 13, 14) by having a smaller test with needle-like primary spines throughout their length.

Genus Paurinella Kozur & Mostler, 1981 TYPE SPECIES. — Paurinella curvata Kozur & Mostler, 1981 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 512, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["KOZUR H. & MOSTLER H. 1981. - Beitrage zur Erforschung der mesozoischen Radiolarien. Teil IV. Thalassosphaeracea Haeckel, 1862, Hexastylacea Haeckel, 1862 emend Petrushevskaya 1979, Sponguracea Haeckel, 1862 emend. und weitere triassische Lithocycliacea, Trematodiscacea, Actinommacea und Nassellaria. Geologisch-Palaontologische Mitteilungen Innsbruck 1: 1 - 208."]}

Novamuria impensa (Whalen & Carter in Carter, Whalen & Guex, 1998) (Fig. 6 S-U) Amuria impensa Whalen & Carter in Carter, Whalen & Guex,1998: 56, pl. 11, figs 2, 3, 6, 23. OCCURRENCE. — Lower Jurassic, lowermost Hettangian – lower Sinemurian of Queen Charlotte Islands, British Columbia, Canada; Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 508, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Droltus eurasiaticus Kozur & Mostler, 1990 (Fig. 10X, Y) Droltus eurasiaticus Kozur & Mostler, 1990: 223, pl. 17, figs 3-4. — Sugiyama 1997: 176, fig. 50.4. — Yeh & Cheng 1998: 20, pl. 12, fig. 1. — Whalen & Carter 2002: 116, pl. 16, figs 5-6. — Goričan et al. 2006: 136-137, pl. DRO07, figs 1-3. Parahsuum sp.? A – Yao 1982: pl. 3, fig. 6. OCCURRENCE. — Lower Jurassic, upper Hettangian - Pliensbachian of Japan; Bavaria, Germany and northern Hungary; Busuanga Island, Philippines; Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 520, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["KOZUR H. & MOSTLER H. 1990. - Saturnaliacea Deflandre and some others stratigraphically important Radiolaria from the Hettangian of Lenggries / Isar (Bavaria, Northern Calcareous Alps). Geologisch-Palaontologische Mitteilungen Innsbruck 17: 179 - 248.","SUGIYAMA K. 1997. - Triassic and Lower Jurassic Radiolarian biostratigraphy in the siliceous claystone and bedded chert units of the southeastern MinoTerrane, central Japan. Bulletin of the Mizunami Fossil Museum 24: 79 - 193.","YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65.","WHALEN P. A. & CARTER E. S. 2002. - Pliensbachian (Lower Jurassic) Radiolaria from Baja California Sur, Mexico. Micropaleontology 48 (2): 97 - 151. https: // doi. org / 10.2113 / 48.2.97","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p."]}

Palaeosaturnalis blomei Kozur & Mostler, 1990 (Fig. 9V) Palaeosaturnalis blomei Kozur & Mostler, 1990: 191, pl. 9, fig. 9. OCCURRENCE. — Lower Jurassic, Hettangian-lower Sinemurian of Bavaria, Germany; Mersin Mélange, NW of Mersin city, southernTurkey.

Genus Bipedis De Wever, 1982 TYPE SPECIES. — Bipedis calvabovis De Wever, 1982 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 530, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758

Pantanellium freboldi Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 6 H-J) Pantanellium freboldi Whalen & Carter in Carter, Whalen & Guex, 1998: 48, pl. 1, figs 17, 21, 27. Pantanellium sp. 1 – Tipper et al. 1991: pl. 8, fig. 14. OCCURRENCE. — Lower Jurassic, middle Hettangian-lower Sinemurian of Queen Charlotte Islands, British Columbia, Canada; Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 506, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","TIPPER H. W., SMITH P. L., CAMERON B. E. B., CARTER E. S., JACOBS G. K. & JOHNS M. J. 1991. - Biostratigraphy of the Lower Jurassic formations of the Queen Charlotte Islands, British Columbia, in WOODSWORTH G. J. (ed.), Evolution and Hydrocarbon Potential of the Queen Charlotte Basin, British Columbia. Geological Survey of Canada, Paper 90 - 10: 203 - 236."]}

Stauroacanthocircus sp. A (Fig. 10R) OCCURRENCE. — Lower Jurassic, lower Sinemurian of Mersin Mélange, NW of Mersin city, southern Turkey. DESCRIPTION Shell not preserved, ring broad and elliptical. Thin ring contains eight, thin, needle-like spines. Inner cavity broad, elliptical with four thin polar spines. REMARKS This specimen differs from Stauroacanthocircus dickinsoni (Yeh 1989: 50, pl. 13, fig. 18) by having a broad elliptical ring and inner cavity, and thin, short peripheral and polar spines.

Pseudoeucyrtis busuangaensis (Yeh & Cheng, 1998) (Fig. 12R) Protokatroma busuangaensis Yeh & Cheng, 1998: 30-31, pl. 7, fig. 2, 3; pl. 9, figs 4, 5, 24. Protokatroma sp. cf. P. aquila – Yeh & Cheng 1998: 30, pl. 7, fig. 1; pl. 9, figs 6, 7. Protokatroma sp. – Yeh & Cheng 1998: 31, pl. 7, figs 2-3. Pseudoeucyrtis sp. – Hori 2004: 31, pl. 2, figs 49-51. Pseudoeucyrtis busuangaensis – Goričan et al. 2006: 350, 352, pl. PSE04, figs 1-7. OCCURRENCE. — Lower Jurassic, lower Sinemurian-lower Pliensbachian of Busuanga Island, Philippines; Oman; Japan; Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 526, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65.","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p."]}

Genus Saitoum Pessagno, 1977 TYPE SPECIES. — Saitoum pagei Pessagno, 1977 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 528, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758

Udalia primaeva Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 7 H-J) Udalia primaeva Whalen & Carter in Carter, Whalen & Guex, 1998: 60, pl. 6, figs 8, 12, 15, 16, 20, 23. — Tekin 2002a: 189, pl. 3, figs 4-5. ? Udalia sp. cf. U. primaeva – Whalen & Carter in Carter, Whalen & Guex, 1998: pl. 3, fig. 13. OCCURRENCE. — Lower Jurassic,lower Hettangian-lower Sinemurian of QueenCharlotteIslands, BritishColumbia, Canada;AntalyaNappes, NE of Antalya city and Mersin Mélange, NW Mersin city, southernTurkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on pages 509-510, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177"]}

Genus Trexus Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Trexus dodgensis Whalen & Carter, 1998 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 520, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Udalia infrequens Tekin, n. sp. (Fig. 7F, G) urn:lsid:zoobank.org:act: 494233BE-DDCB-4D94-A544-572EEF1D94A0 HOLOTYPE. — Sample Orbuk-36, HU.JMB.0118 (Fig. 7F). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — From the Latin: infrequens: rare, due its rare occurrence. OCCURRENCE. — Lower Jurassic, lower Pliensbachian of the Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. PARATYPE. — HU.JMB.0119 (Fig. 7G). DIMENSIONS (based on two specimens, inµm). — Maximum diameter of cortical shell: 100-110 (holotype: 110, average: 105); Length of longest spine: 80-100 (holotype: 100, average: 90). DESCRIPTION Cortical shell small, subrectangular with subplaniform upper and lower surfaces. Outer pore meshwork with triangular to tetragonal pore frames and large nodes at pore frame vertices. Four, needle-like, distally tapering spines situated at each corner and terminated with a sharp end. Length of spines slighly shorter than diameter of the cortical shell. REMARKS This species differs from Udalia primaeva (Carter et al. 1998: 60, pl. 6, figs 8, 12, 15, 16, 20, 23) by possessing larger pore frames on the cortical shell and large nodes at pore frame vertices. Although inner structure of this species is unknown, as specimens have needle-like spines, this species is included to Udalia instead of Emiluvia Foreman, 1973., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 509, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","FOREMAN H. P. 1973. - Radiolaria of Leg 10 with systematic and ranges for the families Amphyndacidae, Artostrobidae, Theoperidae. Deep Sea Drilling Project Initial Reports 10: 407 - 474. https: // doi. org / 10.2973 / dsdp. proc. 10.118.1973"]}

Bipedis hannai Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 13 J-L) Bipedis hannai Whalen & Carter in Carter, Whalen & Guex, 1998: 77-78, pl. 21, figs 5, 6, 12, 14, 15; pl. 22, figs 2, 3, 5, 6, 9-11, 14, 15. — Yeh & Cheng 1998: 33, pl. 8, fig. 2. — Tekin 2002a: 194, pl. 5, figs 13-14. OCCURRENCE. — Lower Jurassic,? lower Hettangian-lower Sinemurian-upper Sinemurian of Queen Charlotte Islands, British Columbia; Busuanga Island, Philippines; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 530, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65.","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177"]}

Danubea sp. A (Fig. 9I) OCCURRENCE. — Lower Jurassic, lower Sinemurian of the Mersin Mélange, NW of Mersin city, southern Turkey. DESCRIPTION Test large with inflated cortical shell and two polar spines. Cortical shell sphaerical with triangular and tetragonal pore frames. Small nodes present at pore frame vertices. Spines unequal in length, needle-like, circular in transversal section and tapering gradually to the distal end. REMARKS This specimen differs from Danubea howardi Whalen & Carter in Carter et al. (1998: 40-41, pl. 5, figs 2-4, 14, 18) by having an ellipsoidal test in the direction of polar spines and needle-like spines instead of tricarinate ones.

Palaeosaturnalis schaafi Kozur & Mostler, 1990 (Fig. 9X) Palaeosaturnalis schaafi Kozur & Mostler, 1990: 193, pl. 11, figs 9, 11-12; pl. 12, figs 2, 7. — Yeh & Cheng 1998: 16, pl. 2, figs 6, 10. — Tekin 2002a: 182, pl. 2, fig. 4. Palaeosaturnalis cf. schaafi – Kozur & Mostler 1990: pl. 11, figs 10, 13; pl. 12, fig. 1. OCCURRENCE. — Lower Jurassic, middle Hettangian-lower Lower Pliensbachian of Alps and Varhegy Formation, northern Hungary; Busuanga Island, Philippines; Antalya nappes, Antalya and Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 518, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["KOZUR H. & MOSTLER H. 1990. - Saturnaliacea Deflandre and some others stratigraphically important Radiolaria from the Hettangian of Lenggries / Isar (Bavaria, Northern Calcareous Alps). Geologisch-Palaontologische Mitteilungen Innsbruck 17: 179 - 248.","YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65.","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177"]}

Genus Anaticapitula Dumitrica & Zügel, 2003 TYPE SPECIES. — Anaticapitula clauda Dumitrica & Zügel, 2003 by original designation. Anaticapitula anatiformis (De Wever, 1982) (Fig. 12W, X) Jacus ? anatiformis De Wever, 1982a: 205, pl. 11, figs 10-15; 1982b: 343, pl. 54, figs 1-5; pl. 58, figs 1, 2, 6. — Carter et al. 1998: 74, pl. 18, figs 13-14, 17-19, 27. — Yeh & Cheng 1998: 32, pl. 6, fig. 10. — Hori & Wakita 2002: pl. 3, fig. 7. — Whalen & Carter 2002: 138, pl. 8, fig. 8. Bisphaerocephalina (?) sp. – Imoto et al. 1982: pl. 1, fig. 10. Jacus sp. A – Murchey 1984: pl. 2, fig. 29. — Hattori 1987: pl. 11, fig. 7; 1989: pl. 5, fig. I. Jacus sp. B – Murchey 1984: pl. 2, fig. 28. Jacus sp. D – Hattori 1987: pl. 11, fig. 8. Jacus ? sp. B – Hattori 1989: pl. 5, fig. J. Jacus anatiformis – De Wever et al. 1990: pl. 3, fig. 10. — Gawlick et al. 2001: pl. 2, fig. 16. Thetis sp. B – Yao 1997: pl. 10, fig. 467. Jacus cf. anatiformis – Gawlick et al. 2001: pl. 2, fig. 16. Anaticapitula anatiformis – Tekin 2002a: 191, pl. 5, fig. 8. — Goričan et al. 2006: 18-20, pl. JAC02, figs 1-11. Jacus ? aff. anatiformis – Goričan et al. 2003: 296, pl. 4, figs 5-6. Jacus ? sp. – Goričan et al. 2003: 296, pl. 4, fig. 7. Anaticapitula (?) sp. – Matsuoka 2004: fig. 144. Anaticapitula ? anatiformis – Matsuoka 2004: fig. 145. OCCURRENCE. — Lower Jurassic, middle Hettangian-middleToarcian of Gümüslü village, Lycien Nappes, Burdur, Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey; Queen Charlotte Islands, British Columbia, Canada; Baja California Sur, Mexico; Austria; Slovenia; Oman; Busuanga Island, Philippines; Japan., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on pages 526-528, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["DUMITRICA P. & ZUGEL P. 2003. - Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany). Geodiversitas 25 (1): 5 - 72.","DE WEVER P. 1982 a. - Nassellaria (Radiolaires Polycystines) du Lias de Turquie. Revue de Micropaleontologie 24 (4): 189 - 232.","CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65.","HORI N. & WAKITA J. 2002. - Jurassic radiolarians from manganese carbonate nodules from Chichibu Belt in the Ino district, Kochi Prefecture, Shikoku. Journal of the Geological Society of Japan 108 (7): 478 - 481. https: // doi. org / 10.5575 / geosoc. 108.478","WHALEN P. A. & CARTER E. S. 2002. - Pliensbachian (Lower Jurassic) Radiolaria from Baja California Sur, Mexico. Micropaleontology 48 (2): 97 - 151. https: // doi. org / 10.2113 / 48.2.97","IMOTO N., TAMAKI A., TANABE T. & ISHIGA H. 1982. - An age determination on the basis of radiolarian biostratigraphy of bedded manganese deposit at the Yumiyama mine in the Tamba District, southwest Japan. News of Osaka Micropaleontologists, Special Volume 5: 227 - 236.","MURCHEY B. 1984. - Biostratigraphy and litostratigraphy of chert in the Franciscan Complex, Marin headlands, California, in BLAKE M. C. (ed.), Franciscan Geology of Northern California. Society of Economic Paleontologists and Mineralogists 5: 51 - 70.","HATTORI I. 1987. - Jurassic radiolarian fossils from the Nanjo Massif, Fukui Prefacture, central Japan. Bulletin of Fukui Municipial Museum of Natural History 34: 29 - 101.","KOZUR H. & MOSTLER H. 1981. - Beitrage zur Erforschung der mesozoischen Radiolarien. Teil IV. Thalassosphaeracea Haeckel, 1862, Hexastylacea Haeckel, 1862 emend Petrushevskaya 1979, Sponguracea Haeckel, 1862 emend. und weitere triassische Lithocycliacea, Trematodiscacea, Actinommacea und Nassellaria. Geologisch-Palaontologische Mitteilungen Innsbruck 1: 1 - 208.","KOZUR H. & MOSTLER H. 1990. - Saturnaliacea Deflandre and some others stratigraphically important Radiolaria from the Hettangian of Lenggries / Isar (Bavaria, Northern Calcareous Alps). Geologisch-Palaontologische Mitteilungen Innsbruck 17: 179 - 248.","CORDEY F. & CARTER E. S. 1996. - New Nassellaria (Radiolaria) from the Lower Jurassic of the Canadian Cordillera. Canadian Journal of Earth Science 3: 444 - 451. https: // doi. org / 10.1139 / e 96 - 034","PESSAGNO E. A. JR, WHALEN P. A. & YEH K. Y. 1986. - Jurassic Nassellariina (Radiolaria) from the North American geologic terranes. Bulletin of the American Paleontology 91 (26): 1 - 75.","HATTORI I. 1989. - Jurassic radiolarians from manganese nodules at three sites in the western Nanjo Massif, Fukui Prefecture, central Japan (Data). Journal of Faculty Education, Fukui University Part II (Natural Sciences) 3: 47 - 134.","DE WEVER P., GRISSAC C. & BECHENEC F. 1990. - Permian to Cretaceous radiolarian biostratigraphic data from the Hawasina Complex, Oman Mountains, in ROBERTSON A. H. F, SEARLE M. P. & RIES A. C. (eds), The Geology and Tectonics of the Oman Region. Geological Society Special Publication 49: 225 - 238. https: // doi. org / 10.1144 / GSL. SP. 1992.049.01.15","GAWLICK H., SUZUKI H. & MISSONI S. 2001. - Nachweis von unterliassischen Beckensedimenten in Hallstatter Fazies (Durrnberg-Formation) im Bereich der Hallein - Berchtesgadener Hallstatter Zone und des Lammer Beckens (Hettangium - Sinemurium). Mitteilungen der Gesselschaft der Geologie und Bergbaustudenten in Osterreich 45: 39 - 55.","YAO A. 1997. - Faunal change of early-middle Jurassic radiolarians. News of Osaka Micropaleontologists, Special Volume 10: 155 - 182.","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p.","GORICAN S., SMUC A. & BAUMGARTNER P. O. 2003. - Toarcian Radiolaria from Mt. Mangart (Slovenian-Italian border) and their paleoecological implications. Marine Micropaleontology 49: 275 - 301. https: // doi. org / 10.1016 / S 0377 - 8398 (03) 00034 - 3","MATSUOKA A. 2004. - Toarcian (Early Jurassic) radiolarian fauna from the Nanjo Massif in the Mino Terrane, central Japan. News of Osaka Micropaleontologists, Special Volume 13: 69 - 87."]}

Charlottea johnsoni Whalen & Carter in Carter, Whalen & Guex, 1998 (Fig. 9 M-N) Charlottea johnsoni Whalen & Carter in Carter, Whalen & Guex, 1998: 38-39, pl. 3, figs 5, 10, 13, 14. — Suzuki et al. 2002: 168, fig. 4G. — Tekin 2002a: 188, pl. 3, fig. 16. — Bertinelli & Marcucci 2011: 411, pl. 2, figs 12-13. OCCURRENCE. — Lower Jurassic, uppermost Hettangian-lower Sinemurian of Queen Charlotte Islands, British Columbia, Canada; North Peru; Gran Sasso, central Apennines, Italy; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey.

Saitoum sp. A (Fig. 13B) OCCURRENCE. — Lower Jurassic, lower Sinemurian of the Mersin Mélange, NW of Mersin city, southern Turkey. DESCRIPTION Test small with subsphaerical cephalis and a short horn. Surface of cephalis with irregularly arranged, scattered, large, subcircular pores. Horn short, needle-like, uniform in width till to the end of its preserved length. Horn not aligned to the apex of cephalis. Three feet circular in transversal section. REMARKS This specimen differs from Saitoum triumphense (Carter et al. 1998: 68-69, pl. 17, figs 10-11, 14-15) by possessing a very short apical horn, rare, scattered, large pores on the surface of test and short foot. It differs also from Saitoum keki (De Wever 1982a: 192, pl. 4, figs 4-6) by having both needle-like horn and feet instead of tricarinate ones., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 528, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","DE WEVER P. 1982 a. - Nassellaria (Radiolaires Polycystines) du Lias de Turquie. Revue de Micropaleontologie 24 (4): 189 - 232."]}

Gorgansium gongyloideum Kishida & Hisada, 1985 (Fig. 6E, F) Gorgansium gongyloideum Kishida & Hisada, 1985: 116, pl. 1, figs 21-22. — Kishida & Hisada 1986: fig. 4. 4. — Hori 1990: fig. 8, no. 6. — Goričan 1994: 70, pl. 1, fig. 6. — Yeh & Cheng 1998: 12-13, pl. 1, fig. 1. — Tekin 2002a: 179, pl. 1, fig. 4. — Whalen & Carter 2002: 105, pl. 6, figs 3-5, 9-12. — Goričan et al. 2006: 170-171, pl. GOR02, figs 1-5. Gorgansium sp. G. aff. morganense – Whalen & Pessagno 1984: pl. 1, figs 15-16. Gorgansium sp. A – Kishida & Hisada 1985: pl. 4, fig. 8. Gorgansium spp. – Goričan et al. 2003: 291, pl. 1, fig. 7. OCCURRENCE. — Upper Triassic, Rhaetian-Lower Jurassic, middle Toarcian of Japan; northeastern British Columbia, Canada; Baja California Sur, Mexico; Skrile Formation, Slovenia; Budva Zone, Montenegro; Busuanga Island, Philippines; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey.

Katroma ninstintsi Carter in Carter, Cameron & Smith, 1988 (Fig. 13 C-E) Katroma ninstintsi Carter in Carter, Cameron & Smith 1988: 60, pl. 2, figs 4, 9. — Goričan et al. 2006: 228-229, pl. KAT14, figs 1-10. Katroma sp. – Igo et al. 1985: pl. 15, fig. 4. — Pessagno & Mizutani 1992: 99, pl. 99, figs 6, 10, 11, 15. Katroma sp. A – Yeh 1987a: 81, pl. 3, fig. 1; pl. 6, figs 4, 14. — Tumanda et al. 1996: 181, fig. 4.15. — Yeh & Cheng 1998: 30, pl. 7, figs 7, 10. Syringocapsa inflata – Gawlick et al. 2001: pl. 5, fig. 9. OCCURRENCE. — Lower Jurassic, lower Pliensbachian-upper Pliensbachian of Queen Charlotte Islands, British Columbia and northeastern British Columbia, Canada; Oregon, UnitedStates; Austria; Philippines; Japan and Mersin Mélange, NW of Mersin city, southern Turkey.

Pantanellium giganteum Tekin, n. sp. (Fig. 6 K-O) urn:lsid:zoobank.org:act: 5BAC0A8A-3218-48FA-8EB3-E2EEF99333A4 HOLOTYPE. — Sample Orbuk-26, HU.JMB.0106 (Fig. 6K). PARATYPES. — HU.JMB.0107 (Fig. 6L), HU.JMB.0108 (Fig. 6M). HU.JMB.0109 (Fig. 6N), HU.JMB.0110 (Fig. 6O). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — From the Latin giganteum, giant, due to its big size. OCCURRENCE. — Lower Jurassic, upper Hettangian-lower Pliensbachian of the Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (basedonfivespecimens,inµm). — Diameterofthecortical shell along spines: 83-120 (holotype: 120, average: 110.5); Diameter of the cortical shell perpendicular to spines: 110-133 (holotype: 110, average:117.1); Length of shorter spine: 50-90 (holotype:80, average: 74.6); Length of longer spine: 120-166 (holotype: 140, average: 147). DESCRIPTION Cortical shell large, sphaerical to subsphaerical with large pentagonal and hexagonal pore frames. Pore frames with rounded to subrounded nodes at pore frame vertices. Six to seven pore frames visible both along primary spines and perpendicular to primary spines. Polar spines unequal, three-bladed with rounded, longitudinal ridges and relatively narrow grooves. One polar spine about twice longer than the other polar spine and longer polar spine slightly dextrally twisted. REMARKS This species differs from P. freboldi (Carter et al. 1998: 48, pl. 1, figs 17, 21, 27) by having unequal and slightly dextrally twisted polar spines. It differs also from P. sixi Whalen & Carter in Carter, Whalen & Guex, 1998 (Carter et al. 1998: 48) by possessing a larger cortical shell and longer, slightly dextrally twisted polar spines in many cases., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 506, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778"]}

Farcus graylockensis Pessagno, Whalen & Yeh, 1986 (Fig. 12S) Farcus graylockensis Pessagno, Whalen & Yeh, 1986: 24, pl. 2, figs 4, 6-8, 12, 15. — Yeh 1987a: 76, pl. 1, fig. 7. — Pujana 1996: 139, pl. 1, fig. 7. — Yao 1997: pl. 8, fig. 395. — Tekin 2002a: 189, pl. 4, fig. 2. — Goričan et al. 2006: 162-163, pl. FAR04, figs 1-2. ? Farcus sp. cf. F. graylockensis – Yeh 1987a: 76, pl. 25, fig. 4. Farcus aff. kozuri – Yao 1997: pl. 8, fig. 396. OCCURRENCE. — Lower Jurassic, lower Sinemurian-lower Toarcian of East-central Oregon, United States; Argentina; Oman; Japan; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 526, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["PESSAGNO E. A. JR, WHALEN P. A. & YEH K. Y. 1986. - Jurassic Nassellariina (Radiolaria) from the North American geologic terranes. Bulletin of the American Paleontology 91 (26): 1 - 75.","YEH K. 1987 a. - Taxonomic studies of Lower Jurassic Radiolaria from East-Central Oregon. Bulletin of the National Museum of Natural Science, Taichung, Taiwan 2: 169 p.","PUJANA I. 1996. - A new Lower Jurassic Radiolarian fauna from the Neuquen Basin, centralwest Argentina, in XIII Congreso Argentino de Geologia, y Ii Congreso de Exploracion de Hidrocarburos, Actas: Buenos Aires, 13 al 18 de octubre de 1996. Asociacion Geologica Argentina: Instituto Argentino del Petroleo y del Gas: 133 - 142.","YAO A. 1997. - Faunal change of early-middle Jurassic radiolarians. News of Osaka Micropaleontologists, Special Volume 10: 155 - 182.","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p."]}

Genus Acanthotetrapaurinella Kozur & Mostler, 2006 TYPE SPECIES. — Acanthotetrapaurinella variabilis Kozur & Mostler, 2006, by original designation.

Droltus hecatensis Pessagno & Whalen, 1982 (Fig. 11C) Droltus hecatensis Pessagno & Whalen, 1982: 121, pl. 1, figs 12, 13, 18, 22; pl. 4, figs 1, 2, 6, 10; pl. 12, figs 18-19. — Hattori 1989: pl. 12, fig. D, F; pl. 30, fig. G; pl. 43, fig. D. — Pujana 1996: 138, pl. 1, figs 6, 10, 17. — Carter et al. 1998: 63, pl. 15, fig. 14. — Gawlick et al. 2001: pl. 5, fig. 13. — Suzuki et al. 2002: 181, figs 8G, L, M, non fig. 8H. — Tekin 2002a: 186, pl. 3, fig. 9. — Goričan et al. 2006: 136-137, pl. DRO02, figs 1-7. Droltus sp. – Sashida 1988: 24, pl. 3, figs 7, 16, 17. Bagotidae gen. et sp. indet. – Pujana 1996: 138, pl. 1, fig. 10. OCCURRENCE. — Lower Jurassic, Hettangian-lower Pliensbachian of Queen Charlotte Islands, British Columbia, Canada; Japan; Austria; North Peru; central - west Argentina; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 520, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["PESSAGNO E. A. JR & WHALEN P. A. 1982. - Lower-Middle Jurassic Radiolaria (multicrytid Nassellariina) from California, east-central Oregon and the Queen Charlotte Islands, B. C. Micropaleontology 28 (2): 111 - 169. https: // doi. org / 10.2307 / 1485228","HATTORI I. 1989. - Jurassic radiolarians from manganese nodules at three sites in the western Nanjo Massif, Fukui Prefecture, central Japan (Data). Journal of Faculty Education, Fukui University Part II (Natural Sciences) 3: 47 - 134.","PUJANA I. 1996. - A new Lower Jurassic Radiolarian fauna from the Neuquen Basin, centralwest Argentina, in XIII Congreso Argentino de Geologia, y Ii Congreso de Exploracion de Hidrocarburos, Actas: Buenos Aires, 13 al 18 de octubre de 1996. Asociacion Geologica Argentina: Instituto Argentino del Petroleo y del Gas: 133 - 142.","CARTER E. S., WHALEN P. A. & GUEX J. 1998. - Biochronology and paleontology of Lower Jurassic (Hettangian and Sinemurian) radiolarians, Queen Charlotte Islands, British Columbia. Geological Survey of Canada Bulletin 496: 1 - 162. https: // doi. org / 10.4095 / 209778","GAWLICK H., SUZUKI H. & MISSONI S. 2001. - Nachweis von unterliassischen Beckensedimenten in Hallstatter Fazies (Durrnberg-Formation) im Bereich der Hallein - Berchtesgadener Hallstatter Zone und des Lammer Beckens (Hettangium - Sinemurium). Mitteilungen der Gesselschaft der Geologie und Bergbaustudenten in Osterreich 45: 39 - 55.","SUZUKI H., PRINZ- GRIMM P. & SCHMIDT- EFFING R. 2002. - Radiolarien aus dem Grenzbereich Hettangium / Sinemurium von Nordperu. Palaontologische Zeitschrift 76: 163 - 187. https: // doi. org / 10.1007 / BF 02989855","TEKIN U. K. 2002 a. - Lower Jurassic (Hettangian-Sinemurian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Micropaleontology 48 (2): 177 - 205. https: // doi. org / 10.2113 / 48.2.177","GORICAN S., CARTER E. S., DUMITRICA P., WHALEN P. A., HORI R. S., DE WEVER P., O'DOGHERTY L., MATSUOKA A. & GUEX J. 2006. - Catalogue and Systematics of Pliensbachian, Toarcian and Aalenian Radiolarian Genera and Species. Zalozba ZRC / ZRC Publishing, ZRC SAZU, Ljubljana, 446 p.","SASHIDA K. 1988. - Lower Jurassic multisegmented Nasselleria from the Itsukaichi area, western part of Tokyo Prefecture, central Japan. Scientific Reports of Institute Geoscience, University of Tsukuba, Section B 9: 1 - 27."]}

Farcus sp. B (Fig. 12V) OCCURRENCE. — Lower Jurassic, lower Sinemurian of the Mersin Mélange, NW of Mersin city, southern Turkey. DESCRIPTION Tets long, dicyrtid with hemisphaerical cephalis. Cephalis mainly poreless/with rare pores and a long, needle-like, distally tapering horn. Collar stricture marked by a slight depression. Thorax truncated pyramidal in outline with scattered, subcircular pores, in some cases pores aligned in vertical rows. Thorax terminated in a short tube with scattered and subcircular pores. Four feet long, needle-like and decreasing in width distally. REMARKS This specimen differs from Farcus priscus Yeh & Cheng (1998: 24, pl. 5, figs 1, 6, 12) by possessing a long, pyramidal test, few pores at the surface of thorax, longer, prominent tube at the end of thorax and longer feet., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 526, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["YEH K. & CHENG Y. 1998. - Radiolarians from the Lower Jurassic of the Busuanga Island, Philippines. Bulletin of the National Museum of Natural Sciences, Taiwan 11: 1 - 65."]}

Genus Gorgansium Pessagno & Blome, 1980 TYPE SPECIES. — Gorgansium silviesense Pessagno & Blome, 1980 by original designation., Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 505, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["PESSAGNO E. A. JR & BLOME C. D. 1980. - Upper Triassic and Jurassic Pantanelliinae from California, Oregon and British Columbia. Micropaleontology 26 (3): 225 - 273. https: // doi. org / 10.2307 / 1485314"]}