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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"]}

Genus Emiluvia Foreman, 1973 TYPE SPECIES. — Emiluvia chica Foreman, 1973 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":["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"]}

Genus Beatricea Whalen & Carter in Carter, Whalen & Guex, 1998 TYPE SPECIES. — Beatricea christovalensis Whalen & Carter in Carter, Whalen & Guex, 1998 by original designation.

Emiluvia prisca Tekin, n. sp. (Fig. 6 W-Y) urn:lsid:zoobank.org:act: 7DE81B35-1355-426F-89AC-1AA538F91A9C HOLOTYPE. — Sample Orbuk-46, HU.JMB.0111 (Fig. 6W). PARATYPES. — HU.JMB.0112 (Fig. 6X), HU.JMB.0113 (Fig. 6Y). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — From the Latin: Prisca: former, ancient, old-fashioned, due to its old occurrence. OCCURRENCE. — Lower Jurassic, middle Lower Pliensbachianupper Pliensbachian, Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on three specimens, in µm). — Diameter of test: 92-100 (holotype: 100, average: 97.3); Length of spines: 110- 130 (holotype: 130, average: 118.6). DESCRIPTION Test large, sphaerical to subsphaerical with four spines situated at corners. Very large nodes present at pore frame vertices on the outer layer of cortical shell. Four nodes visible per row. Inner layer of pore frames polygonal (mainly triangular). Spines longer than the diameter of cortical shell and mainly equal, tapering distally, terminated with very sharp end. They are tricarinate with relatively wide ridges and wide grooves. REMARKS This species can be differentiated from Emiluvia tuberis (Carter et al. 1998: 41-42, pl. 5, figs 9, 10, 19) by having a sphaerical to subsphaerical cortical shell with large nodes at pore frame vertices., 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"]}

Genus Praeudalia Tekin, n. gen. urn:lsid:zoobank.org:act: 7F321497-E109-4829-94BB-64E5ABB41432 TYPE SPECIES. — Praeudalia rhaetica Tekin, n. gen., n. sp. ETYMOLOGY. — For the occurrence precedent to Udalia Whalen & Carter, 1998. OCCURRENCE. — Late Triassic, Rhaetian of Queen Charlotte Islands, British Columbia, Canada; El Castillo Mélange, Nicaragua / Costa Rica Border; NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey. INCLUDED TAXA. — Praeudalia rhaetica Tekin, n. gen., n. sp., Spumellaria gen. and sp. indet. A (sensu Tekin 2002b). DESCRIPTION Cortical shell includes Pseudoaulophacid structure composed of meshwork of equilateral, triangular pore frames with rounded nodes at vertices. Four spines about similar in length, wide at the base and tapering distally, with sharp ends. Spines coplanar and tetracarinate with very wide grooves adjacent to very narrow ridges. REMARKS This genus differs from Udalia (in Carter et al. 1998: 59) by having tetracarinate instead of tricarinate spines. Praeudalia rhaetica Tekin, n. gen., n. sp. (Fig. 7 A-D) urn:lsid:zoobank.org:act: 018D810C-5979-4B09-AE11-9E56620CF889 Spumellaria gen. and sp. indet. B – Carter 1993: 92, pl. 13, figs 6, 8, 11. — Baumgartner et al. 2008: pl. 3, fig. 11. Spumellaria gen. and sp. indet. A – Tekin 1999: 124, pl. 23, fig. 7. HOLOTYPE. — Sample Orbuk-15, HU.JMB.0114 (Fig. 7A). PARATYPES. — HU.JMB.0115 (Fig. 7B), HU.JMB.0116 (Fig. 7C), HU.JMB.0117 (Fig. 7D). TYPE LOCALITY. — Orbuklukeli section Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — Because of its occurrence in Rhaetian strata. OCCURRENCE. — Upper Triassic, Rhaetian of Queen Charlotte Islands, British Columbia, Canada; El Castillo Mélange, Nicaragua / Costa Rica Border; Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on four specimens, in µm). — Maximum diameter of the cortical shell: 88-110 (holotype: 100, average: 98.5); Length of longest spine: 70-78 (holotype: 70, average: 74.3). DESCRIPTION Same as of the genus. Cortical shell disc-shaped, large, wider than the length of four spines. REMARKS Same as for the genus. This species differs from another species of Praeudalia Tekin, n. gen., illustrated as Gen. et sp. indet. in Tekin (2002b: 428, pl. 3, fig. 12) by possessing a smaller cortical shell 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 pages 508-509, 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","TEKIN U. K. 2002 b. - Late Triassic (Late Norian-Rhaetian) radiolarians from the Antalya Nappes, central Taurides, southern Turkey. Rivista Italiana di Paleontologia e Stratigrafia 108 (3): 1 - 26. https: // doi. org / 10.13130 / 2039 - 4942 / 5486","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.","BAUMGARTNER P. O., FLORES K., BANDINI A. N., GIRAULT F. & CRUZ D. 2008. - Upper Triassic to Cretaceous Radiolaria from Nicaragua and northern Costa Rica - The Mesquito Composite Oceanic Terrane. Ofioliti 33 (1): 1 - 19.","TEKIN U. K. 1999. - Biostratigraphy and systematics of late Middle to Late Triassic radiolarians from the Taurus Mountains and Ankara Region, Turkey. Geologisch-Palaontologische Mitteilungen Innsbruck, special issue 5: 1 - 297."]}

Beatricea sanpabloensis (Whalen & Carter, 2002) (Fig. 6V) Orbiculiformella sanpabloensis Whalen & Carter, 2002: 109, pl. 1, figs 1-2. Orbiculiforma sp. – Whalen & Pessagno 1984: pl. 1, fig. 18. Beatricea sanpabloensis – Goričan et al. 2006: 62, 63, pl. ORB07, figs 1-3. OCCURRENCE. — Lower Jurassic, lower Sinemurian-lower Upper Pliensbachian of 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 508, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758, {"references":["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","WHALEN P. A. & PESSAGNO E. A. JR 1984. - Lower Jurassic Radiolaria, San Hipolto Formation, Vizcaino Peninsula, Baja California Sur, in FRIZZELL V. A. JR (ed.), Pacific Section. Economic Palaeontologists and Minerologists 39: 53 - 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."]}

The Mersin Melange (northwest of Mersin city) includes a variety of large sedimentary blocks/tectonic slices of Palaeozoic and Mesozoic origins. Of these, the latter represents facial and tectonostratigraphic counterparts of the Beysehir-Hoyran Nappes (remnants of the northern Neotethys). The Tavuscayiri Block, located at the center of the melange and close to the Orbuklukeli hill, is one of such Mesozoic occurrences, with a continuous pelagic sequence from the Upper Triassic to Lower Jurassic. At the Orbuklukeli hill, a succession of middle Norian to Toarcian age has been precisely dated, which starts with conodont assemblages for the Norian and Rhaetian and includes radiolarians for the upper Rhaetian. An acidic tuff layer corresponds to the T-J boundary, which passes above to an increasingly dominating chert-bearing limestone series, marking a gradually deepening-upward of the sequence. The early Hettangian radiolarians are poorly represented, but diverse and well-preserved radiolarians have been retrieved from the middle Hettangian to the Pliensbachian. A total of eighty-five taxa, including fourteen new species, have been determined. In addition to these, one new genus (Praeudalia Tekin, n. gen.) has been described from the Rhaetian part of the section. The top of the section is represented by nodular limestones in Ammonitico rosso facies, including a diverse Toarcian ammonite fauna. All lithologies of the Orbuklukeli section along the Tavuscayiri Block can be correlated with the previously described lithologies of the Kayabasi Group/Formation in the Bozkir Unit, and Gulbahar/Gumuslu units in the Lycian Nappes.