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Cidaroid sea urchin remains (isolated radioles and rare plates) are described from marine strata of the Harnetts Formation (New Zealand Waitakian Stage (=Late Chattian – Early Aquitarian)), part of...

As part of a geological survey in southwest mainland New Caledonia, potsherds were recorded in the profiles at four coastal sites. Subsequent archaeological investigations at two of these s...

Four trepostome bryozoan species are described from the Upper Triassic of New Caledonia. They include one new genus Metastenodiscus n. gen. The studied fauna shows strong paleobiogeographic relations to New Zealand and less so to Japan. Morphological similarities between Middle Paleozoic and Triassic trepostome bryozoans (e.g., abundant diaphragms) are explained by homeomorphy.

The scope and species content of the pterioid bivalve Monotis Bronn with almost global distribution in Norian (Late Triassic) marine strata are reconsidered. Various infra-generic groupings have been proposed in the last 50 years and all have been subject to some criticism. A scheme which allocates all species to one of eight subgenera (Monotis, Entomonotis Marwick, Eomonotis Grant-Mackie, Inflatomonotis Grant-Mackie, Maorimonotis Grant-Mackie, Pacimonotis Grant-Mackie & Silberling, Baikalomonotis Bychkov and Praemonotis Bychkov) is favoured here and, in line with current trends, these eight are afforded generic status. There is also a growing move away from recognition of subspecies and, when applied here, allows most to be accepted at species level with a few names synonymised.

Two new species and one new subspecies of genus Capnuchosphaera, (Capnuchosphaera tumida nov. sp., C. waihekeensis nov. sp. and C. texensis australis nov. ssp.) are described herein from phosphatic nodules included in mudstone and sandstone beds of the Waipapa Terrane, Waiheke Island, New Zealand. The phosphatic nodules yielded a rich Late Triassic (Carnian-Norian) radiolarian fauna, with a high abundance of spumellarian taxa including numerous species of the genera Capnuchosphaera, Vinassaspongus, Kahlerosphaera, Sarla and Dumitricasphaera. Waiheke Island Capnuchosphaera are characterized by a large cortical shell and a distinctively low ratio of spine length to cortical shell diameter. These features differ significantly from those of Capnuchosphaera in the Tethyan Realm and are considered to be the result of adaptation to an Austral-New Zealand peripheral ocean of Gondwanaland in the Mesozoic Southern Hemisphere.

The ornament on a small external cast in pink chert shows considerable similarity with that of various Middle Palaeozoic and Triassic fish genera. It comes from the Permian–Triassic Oruatemanu Formation of Arrow Rocks, Whangaroa area, eastern Northland. Conodont faunas from a few metres above and below the sample allow correlation with the Neospathodus pakistanensis zone of the Early Triassic, which is assigned to the late Dienerian (late Induan), with adjacent conodont zone faunas in their correct stratigraphic association. The cast is assumed to be that of a small fragment of fin spine, most likely from the junction area of the crown and root on the right-hand side of a dorsal fin spine, possibly anterior, of a marine ctenacanthoid shark, a basal shark order not previously recorded from New Zealand.

This study examines a Triassic deep-sea sequence consisting of rhythmically bedded radiolarian cherts and shales and its implications for early Induan radiolarian fossils. The sequence, obtained from the Waipapa terrane, Waiheke Island, New Zealand, is composed of six lithologic Units (A–F) and, based on conodont biostratigraphy, spans at least the interval from the lowest Induan to the Anisian. Unit A (the basal unit) consists of black chert and shale beds containing fine pyrite minerals; this corresponds to the oceanic anoxic event described at Arrow Rocks further north in New Zealand. The δ13Corg values of Unit A show a pronounced negative shift between the pale-green chert and black shale/chert, which may represent the negative excursion across the Permian–Triassic boundary that has been documented worldwide. The black cherts, which give minimum C-isotopic ratios (around −30‰), are early Induan, and contain a rich radiolarian fauna characterized by Entactinosphaera? crassispinosa Sashida and Tonishi, E.? spoerlii Takemura and Aono, Bistarkum martiali Feng, Entactinia cf. itsukaichiensis Sashida and Tonishi, Ellipsocopicyntra? sp., and rare Nassellaria. A new Induan nassellarian species, Tripedocorbis? blackae n. sp., from the black chert bed, is described herein. Its presence indicates that Triassic-type Nassellaria had already appeared in the early Induan in the pelagic realms of southern hemisphere Panthalassa.

Middle Triassic radiolarians were obtained from a bedded chert sequence in Chiang Dao, northern Thailand. Sixty-four species were identified into two assemblages, which indicate two stratigraphic levels including lower Illyrian (lowermost upper Anisian) and upper Illyrian (uppermost Anisian). The occurrence of upper Anisian radiolarians in our study indicates the former existence of a relatively deep marine environment in northern Thailand with a seaway between eastern and western Palaeotethys. The stratigraphic units containing bedded chert in this area were formerly dated on the basis of fossil evidence and petrological similarities. However, the strata in the study area are possibly not part of a continuous stratigraphic sequence, but consist of tectonic slices. The fossil age from any slice indicates only the geological age of the given slice, and adjacent slices are often of different ages. Parts of the sequence formerly mapped as Carboniferous and Permian are Middle Triassic in the study area. The sequence covers the Carboniferous to Middle Triassic and can be correlated with the eastern zone of the Changning-Menglian Belt in southwestern Yunnan, China.

Flying-foxes and smaller, insectivorous bats, as well as birds, frogs, lizards, rodents and humans, are among Holocene vertebrate remains recovered from a cave near Mé Auré on the central southwestern coast of Grande Terre, the main island of New Caledonia, southwest Pacific. New Caledonia is one of the world’s most critically endangered biodiversity hotspots whose native terrestrial mammals consist of nine bat species, six of which are endemic. The Mé Auré Cave deposit accumulated over a period of some 3000 years, from before colonization of the area by people to the present. In the deposit’s upper levels, bat remains approximate the modern New Caledonian fauna – with the notable exception of the first record of a leaf-nosed bat from these islands – and probably represent bats that lived and died in the cave as well as those brought in as prey by barn owls. In the lowest levels, only flying-foxes are represented, their corroded teeth and other evidence suggesting they were cooked and eaten by people. Our data indicate that at least one insectivorous bat species has become extinct during the last 250 years in New Caledonia. Alternatively, it is possible that this leaf-nosed bat continues to be part of the threatened extant New Caledonian bat fauna but has yet to be recorded by modern faunal surveys.

The partial skeletons of two marine turtles are reported from Late Eocene strata of Northland, northern New Zealand. One, from the autochthonous Ruatangata Sandstone near Whangarei, is identified as a new species of the previously monotypic cheloniid genus Eochelone Dollo, 1903. It is larger than the European type species, E. brabantica Dollo, 1903. The new species, E. monstigris, represents a geographic range extension for Eochelone and for the group of ‘Eocene stem cheloniines’ to which it belongs, a long-distance interchange that the configuration of Late Eocene–Early Oligocene marine currents and land-sea distribution must have permitted. The other specimen, from the allochthonous Pahi Greensand of northeast Kaipara Harbour, was previously reported as a cheloniid but we believe it more likely to belong to the Toxochelyidae. Given previous records of two dermochelyids (Psephophorus and Maoriochelys), the Middle to Late Eocene of New Zealand hosted at least four species of marine turtle which a...

The new monotid bivalve species, Otapiria diana, is described from Aratauran (Early Jurassic) strata in the Awakino Gorge, Marokopa and Kawhia coast, North Island of New Zealand (Murihiku Terrane). In the Awakino Gorge section it appears immediately above O. marshalli, with which it has been confused in the past. O. marshalli is not recognised in the Kawhia section. O. diana occurs with ammonites that give a latest Hettangian–Early Sinemurian correlation. Its presence a mere 7 m above the youngest latest Triassic O. dissimilis demonstrates the existence of a hiatus in the basal Jurassic sequence on the Kawhia coast. Although not yet known in the South Island or from the New Caledonian Early Jurassic, the new species has potential as a zonal index.

International audience; Seventeen ammonite taxa are described and placed in their biostratigraphic framework which covers parts of the Hettangian and Early Sinemurian ages. They show on the one hand strong paleogeographic affinities with the western Tethys [Ectocentrites, Paradasyceras and Angulaticeras (Sulciferites) cf. marmoreum Oppel] and, at the same time, less strongly expressed affinities with eastern Pacific areas with Eolytoceras. Nevertheless the Early Jurassic of New Caledonia essentially reveals a strong endemism due to the presence of ammonites like Kammerkarites paucicostatum (Avias) and Ectocentrites thibaudi nov. sp. and to some New Zealand ammonites like Murihikuites mackellari Stevens or Nevadaphyllites (?) pounamuus Stevens. More ubiquitous forms like Arnioceras aff. bodleyi (Buckman) and Phylloceras (?) cf. psilomorphum Neumayr are also present.

Hikuroa, D.C.H. & Grant-Mackie, J.A., March, 2008. New species of Late Jurassic Australobuchia (Bivalvia) from the Murihiku Terrane, Port Waikato – Kawhia region, New Zealand. Alcheringa 32, 73‐98. ISSN 0311-5518. Five new forms of Australobuchia from New Zealand are described—two new species, A. wherowhero, A. partimlirata, and three in open nomenclature, A. sp. aff. A. partimlirata, A. sp. aff. A. plicata, and A. sp. aff. A. hochstetteri. Validity of the genus Australobuchia Zakharov, 1981, initially proposed for southern Buchia but not previously accepted by New Zealand workers, is confirmed. New Zealand Australobuchia in the Murihiku Terrane are Late Jurassic in age, based on ammonite, belemnite, bivalve, and palynofloral biostratigraphy. A new regional zonation is proposed using the three most common and widespread New Zealand Australobuchia—A. wherowhero sp. nov, A. hochstetteri (Fleming), and A. plicata (Zittel) in ascending stratigraphic order. Confirmation of byssal attachment for Australobuchia ...

Mesozoic volcanic sediments known as the Yeba Formation are widespread in the northeastern region of Lhasa. Recent fossil collections in the formation allow the establishment of a biostratigraphic framework for the volcanic sediments; bivalves are assigned to 21 genera and 22 species including a new genus and 5 new species: Lhasanella lhasaensis (gen. et sp. nov.), Trigonodus xiabolangensis (sp. nov.), Isocyprina lhasaensis (sp. nov.), Gervillaria tibetica (sp. nov.), and Jurassicorbula fuersichi (sp. nov.). Three benthic assemblages have been recognised: the Trigonodus‐Isocyprina assemblage (Rhaetian‐Hettangian), the Lhasanella‐Propeamussium assemblage (Toarcian‐Bajocian), and the Jurassicorbula‐Neomiodon assemblage (Middle Jurassic). The Yeba Formation ranges in age from latest Triassic to Middle Jurassic. Volcanism in the Lhasa block occurred frequently during this period, corresponding to the fragmentation episode in eastern Gondwanaland and to the northwards drift of the Lhasa block. A stron...

Four scleractinian coral taxa are described from limestones within a sandstone-shale sequence correlated with the Late Triassic Babulu Formation, Manatuto township, on the northern coast of Timor-Leste (East Timor). The coral fauna consists of three phaceloid taxa, Paravolzeia timorica gen. et sp. nov., Craspedophyll ramosa sp. nov., Margarosmilia confluens (Munster), and a generically indeterminate solitary taxon attributed to the family Margarophylliidae. Ali four corals are related at various taxonomie levels to Carnian faunas from the Dolomites of northern Italy. Previously, only Norian coral faunas were known from the Triassic of Timor. The fauna exhibits both similarities to and differences from Carnian faunas of the Dolomites and helps confirm palaeogeographic affinities with the western Tethys, although during Late Triassic time Timor lay in the distant southeastern portai of the Tethys. Despite isolation from the western Tethys, the presence of two species foundalso in the Dolomites indicates tha...

Several new ammonite assemblages are described from the uppermost Temaikan and basal Heterian regional stages of New Zealand, Auckland Province, consisting mainly of the east Pacific Eurycephalitinae (Family Sphaeroceratidae). Four successive faunas are distinguished in the upper Awakino valley: all include the Andean genus Araucanites, here occurring with both sex‐morphs. Fauna 1 includes Araucanites awakino n. sp., Iniskinites cf. crassus Riccardi & Westermann, and Xenocephalites grantmackiei Westermann & Hudson ?/m × Lilloettia aff. steinmanni (Spath) ?/M—latest Bathonian; Fauna 2 includes Araucanites postawakino n. sp. and Xenocephalites cf. stipanicici Riccardi et al.—Early/earliest Callovian; Fauna 3 with Araucanites ponganui n. sp., Iniskinites gr. cepoides (Whiteaves), and Choffatia gr.furcula (Neumayr)—Early Callovian; Fauna 4 with Araucanites spellmani n. sp.—? Middle Callovian. The Oraka Sandstone at Kawhia Harbour is now placed entirely in the uppermost Bathonian and Lower Callovian (...

A relatively rich, previously unknown fauna of Ammonitina is described from the Bajocian of southwest Auckland. The great majority are Sphaeroceratidae. The Chondroceras fauna has yielded C. orbignyanum and C. (Defonticeras) cf. oblatum, clearly indicating the Humphriesianum Chron. Also associated is the bivalve index Retroceramus inconditus. The superjacent fauna of Waikatoceratinae (n. subfam.) is almost exclusively endemic to New Zealand, with Waikatoceras crassum, W. hudsoni, Opuatia circularis, O. inflata, and O. challinori n. genn. et spp. Accessory taxa include Chondroceras cf. orbignyanum, and Toxamblyites aff. densicostatus, previously known only from the upper Lower Bajocian of Europe and North Africa. However, stratigraphic evidence together with the bivalve index Retroceramus marwicki clearly date the Waikatoceratinae fauna as mostly post‐Humphriesianum Chron (i.e., early Late Bajocian). The presence of Toxamblyites in this fauna suggests that its range was one chron longer in the Sou...

Revision of type and additional material of Upper Triassic colonial organisms from New Zealand, New Caledonia, Timor, Siberia, Canada and Chile, previously interpreted as Bryozoa or Cnidaria, provides new insights into their palaeobiology, systematic affinity and palaeobiogeography. Heterastridium conglobatum Reuss remains of uncertain hydrozoan affinity, and could be spheractinoidean, hydroidean, or even milleporine. H. conglobatum disciforme n. subsp. (=“forma” disciforme sensu Gerth) is described from New Zealand. The distribution of Heterastridium in the Murihiku and Torlesse terranes of New Zealand-New Caledonia is documented, and it is recorded as ranging through the Middle and Late Norian (Rutherfordi, Columbianus, and Cordilleranus Zones). Its extreme rarity in the Torlesse terrane is thought to be the result of unsuitable facies. “Monotrypella” timorica Vinassa de Regny, described as a bryozoan, is a calcareous demosponge of uncertain family and genus. “M” maorica Wilckens is shown to be the seni...

A new thin‐section study of limestones from Wherowhero Point, Orua Bay, Northland, has produced a fauna of 24 fusuline taxa and 19 smaller foraminifers. The fusulines are much more diverse than earlier records have shown and include genera and species not previously recorded (e.g., Pseudokahlerina compressa Sosnina, Reichelina cf. lamarensis Skinner & Wilde, Rauserella cf. breviscula Sosnina, Chusenella urulungensis Wang et al., Yabeina ampla Skinner & Wilde, Dunbarula, and Pseudo‐fusulina). A species previously recorded as Yabeina parvula Skinner & Wilde is re‐identified as Y. globosa (Yabe), and that identified earlier as Lepidolina multiseptata (Deprat) is determined to be its evolutionary precursor L. shiraiwensis Ozawa. The latter species, together with Kahlerina pachytheca Kochansky‐Devide & Ramovs, Neoschwagerina margaritae Deprat, and Yabeina archaica Dutkevich, are the most widespread species in the eight collections studied from four localities, and these four species and Yabeina ampla ...

Marine Jurassic rocks of Thailand are well-exposed in the Mae Sot and Umphang areas and less extensively near Mae Hong Son, Kanchanaburi, Chumphon and Nakhon Si Thammarat, in the north, west, and south respectively. They are generally underlain unconformably by Triassic and overlain by Quaternary strata. Based mainly on five measured sections, fourteen new lithostratigraphic units are established: (in ascending order) Pa Lan, Mai Hung and Kong Mu Formations of the Huai Pong Group in the Mae Hong Son area; Khun Huai, Doi Yot and Pha De Formations of the Hua Fai Group in the Mae Sot area; Klo Tho, Ta Sue Kho, Pu Khloe Khi and Lu Kloc Tu Formations of the Umphang Group in the Umphang area; and the Khao Lak Formation in the Chumphon area. Mudstone, siltstone, sandstone, limestone and marl are the dominant lithologies. Mudstones, siltstones and sandstones are widespread; limestones are confined to the Mae Sot, Umphang, Kanchanaburi and Mae Hong Son areas; marls are found only in Mae Sot. The sequences are approximately 900 m thick in Mae Sot and 450 m thick in Umphang and are rather thinner in the other areas, particularly in the south. Based on ammonites, with additional data from bivalves and foraminifera, the marine Jurassic is largely Toarcian-Aalenian plus some Bajocian. Late Jurassic ages given previously for strata in the Mae Sot and Umphang areas have not been confirmed.

Well-preserved radiolarians from the Newcastle Group in southwest Kawhia, New Zealand, constitute the first record of Lower Jurassic radiolarians from in situ deposits in high latitudes of the Southern Hemisphere on the margin of Gondwana. The radiolarians were extracted from carbonate nodules from five horizons in the Rewarewa Formation and the lower part of the Arawhero Formation, in the Murihiku Terrane. The radiolarian-bearing sequence, which lies within the upper part of the type section of the local Aratauran Stage, is roughly datable as Hettangian-Sinemurian from rare ammonite occurrences. The radiolarian assemblages consist, on average, of 80–90% spumellarians and 10–20% nassellarians. Spumellarians include species of the following genera: Archaeotriastrum, Crucella, Emiluvia (?) Homeoparo-riaella, Orbictilifomaa, Pantanellium, Paronaella (?), Pseudocrucella, PseIIdoheliodiscus, Spon-gostaurus and Spongotrochus. Nassellarians are composed of species of Ragotum, Bipedis, Droltus, Jams (?) Perispyridium (?) Raoultius, Riedelius, Saitoum and Thetis. From data of Lower Jurassic radiolarian faunas of Europe, North America and Japan, the New Zealand fauna shows stronger affinity with those of the European Tethys such as Turkey (e.g. De Wever 1982) and the Northern Alps (Kozur & Mostler 1990) than with faunas from other areas of the circum-Pacific. This connection between the European Tethyan and New Zealand faunas is not well explained by presently accepted continental reconstructions (Smith et al. 1994) for the Early Jurassic.

An orthopteran wing fragment from the Upper Jurassic (Tithonian) of New Zealand is described as Notohagla mauii n. gen. et sp. and placed near species from the Jurassic-Cretaceous of Central Asia. Closely associated stratigraphically is a moulted abdomen of an urdid isopod Urda zelandica n. sp., similar to a Lower Cretaceous form from the Antarctic Peninsula.

Fossil bivalves of the family Pholadomyidae are described from Jurassic sequences of the Murihiku T errane of New Zealand (Murihiku Supergroup) and New Caledonia (Baie de St‐Vincent Group). Four new species and two new subgenera are erected: Pholadomya (Pholadomya) oretiensis n. sp., Hettangian‐Sinemurian (Aratauran local stage); Pholadomya (P.) beaumontensis n. sp., probably Aalenian‐Callovian (Temaikan); Pholadomya (Kanakimya) uitoe n. subgen. et sp., Aalenian‐Callovian (Temaikan); and Pholadomya (Moewakamya) hudsoni n. subgen. et sp., Oxfordian (Heterian). An isolated specimen from the type Temaikan sequence (c. Aalenian), Kawhia Harbour, does not warrant formal naming but is closely related to P. oretiensis. Neither of the new subgenera is yet recognised elsewhere but an exhaustive review of relations within this large genus is long overdue. P. oretiensis and P. teaumontensis show some similarities with contemporary English species, but this is not thought to imply any particularly close evol...

Bivalves form a significant proportion of the Middle and Upper Jurassic marine fauna of southern Tibet, with an upwards increase in diversity followed by drastic reduction in the Lower Cretaceous. Faunas are typically Tethyan. Systematic study of collections from Nyalam, Gamba and Jiangzi districts allows the establishment of new genera Venustas and Yoldioides in the Malletiidae and Antipectenoides in the Pectinidae and 13 new species in the following genera: Nuculoma, Mesosaccella, Grammatodon (Indogrammatodon), Oxytoma, Meleagrinella, Entolium, Ctenoides, Anisocardia and Protodiceras.

The marine Jurassic sequence in southern Tibet is well exposed, has an abundant fossil record, and provides a good basis for the study of paleoeustasy. From measured sections, nine lhtho-facies representing four broad sedimentary environments (inner and outer shelves, slope and bathyal) can be recognised. Their vertical ranges show that shelf deposits are mainly present in the Lower and Middle Jurassic, whilst outer shelf, slope and bathyal environments dominate in the Middle and Upper Jurassic. On the basis of these, after comparison of the two main approaches used in analysing sea-level movements, i.e. the Exxon Eustatic Curve and Eustatic Cycles, Jurassic eustatic sea-level changes in southern Tibet are described. The resulting curve is seen to correspond closely with earlier published global curves. The cause of these sea-level changes is thought to lie in the breakup of Gondawanaland and the northwards drift of the Indian subcontinent and associated microplates.

The five previously reported fossil calcified hydroids from the New Zealand region are discussed, resulting in: a change of generic placement of two species (Stylaster sensu Jones, 1970 to Calyptopora; and Paraerrina sensu Squires, 1962 to Lepidopora), and a query of the identification of Sporadopora mortenseni sensu Squires, 1962. Several records of bryozoans reported as stylasterids are also rectified. Four additional fossil stylasterids are reported from the region: indeterminate species of Inferiolabiata and Conopora from the early Miocene (Otaian) of Pakaurangi Point; a species of Errina from the early to middle Eocene (Waipawan‐Bortonian) of Chatham Island; and a new species, Stylaster gigas, from the early Pliocene (Opoitian) of Kaawa Beach, North Island. S. gigas has one of the most massive coralla of any known stylasterid. The nine fossil stylasterids now known from the New Zealand region range from the early Eocene to the late Pliocene and are found from both North and South Islands as ...

Marine Triassic sequences are rare along the continental margins of all oceans within the Southern Hemisphere and particularly so in the Atlantic and Indian Oceans. They are also rare within the southern continents. Marine Triassic sequences are only preserved along the west and southwest Pacific margins of what was eastern Gondwanaland. This paper summarises what is known of these rocks and in particular the marine Triassic strata of Australasia (Fig. 1): New Zealand, New Caledonia, Australia, Papua New Guinea and eastern Indonesia. The relevant fossiliferous strata are described in terms of terranes, their known faunal content, biostratigraphic age control and correlations, both inter-terrane and regional.

ニュージーランドには日本とよく似たチャート・砕屑岩を含む中・古生代の地質体が広く分布するが, 放散虫化石による生層序学的研究はようやく端緒に着いたばかりある. 我々は1995, 96年の2年にわたり, 国際学術研究 (代表: 酒井豊三郎)による, ニュージーランドの中生界を中心とした含放散虫岩の調査を行った. その結果のうち, ワイパパ, ムリヒク両テレーンの, 中生代南半球の極めて保存のよい放散虫化ヨを産するノジュールの産状を紹介する.

Malayomaorica malayomaorica (Krumbeck) (s.s.) and Inoceramus cf. haasti Hochstetter are recorded in situ from the northern shore of Tawharanui Peninsula. They indicate an Ohauan (Middle Kimmeridgian) age for the Waipapa Group at this locality. The bivalves are associated with the ichnofossil Rhizocorallium, which possibly indicates a shallow infra littoral environment of deposition.

Three different assemblages of Buchia species are recorded from fine elastics in the Nyalam district of southern Tibet. Praebuchia, Buchia spitiensis and B. concentrica (upper Oxfordian-Kimmeridgian) occur in the Menbu Formation; B. rugosa, B. piochii etc. (Tithonian) characterise the Shuomo Formation; B. shuomoensis, B. mankamanensis etc. (Lower Cretaceous) occur in the Guchuochun Formation. These assemblages correspond with a worldwide pattern of initial development, acme and then decline evident in the genus, whose distribution clearly shows a southwards migration pattern, with extinction operating in the opposite direction. Although regarded as of shallow water origin in some areas, in the central Tethys Buchia appears in deeper water strata and this is correlated with preference for cooler temperatures; its extinction could thus have been due to the postulated terminal Jurassic regression.

As well as Monotis richmondiana Zittel and its subspecies acuticostata (Trechmann), previously discussed, the subgenus Entomonotis Marwick is represented in the New Zealand region by M. Jalinaria var. intermedia Trechmann, M. ochotica var. gigalltea Avias, and M. (E.) sulbcircularis discordalls n. subsp. The inclusion of Trechmann's variety in the M. subcircularis group by Grant- Mackie is more fully documented and it is judged sufficiently distinct to warrant full specific status. Avias' subspecies is shown to be similar to but separable from typical M. subcircularis and it is given subspecific rank within that species. M. subcircularis discordans has both a more limited geographic range and a shorter time-range than M. s. gigantea and seems to have appeared earlier; these two are judged to be chronosubspecies but stratigraphic documentation for this is not presented herein. Local stratigraphic sequences containing Monotis will be described once the systematic content of the faunas has been esta...

The Mata Series (Piripauan-Haumurian; Upper Santonian-Maastrichtian) of New Zealand contains Austrocardium acherontis n. gen. et sp. The new genus Austrocardium is characterised by radial ornament consisting of a few raised keeled costae and a siphonal margin not gaping or digitate. The genus Schedocardia Stewart, hitherto reported from the Paleocene onwards, may be represented in the Mata Series by the poorly preserved Schedocardia ? waiparana n. sp. “Acanthocardia (s.s.) acuticostata” Freneix, 1958 (non d'Orbigny, 1842) from the Senonia:1 Formation a charbons of New Caledonia, is redescribed as the new species Cardium (Bucardium) lillei n. sp., distinct from Cardium (Bucardium) acuticostatum (d'Orbigny, 1842) from the Quiriquina beds (Maastrichtian) of Chile. A lectotype from d'Orbigny's type collection is selected for the Chilean species.

A two-fold division into the subgenera Monotis Bronn s.s. and Entomonotis Marwick was never fully accepted because it was too coarse and associated together in M. (Entomonotis) species varying greatly in size, inflation, and sculpture. The five species-groups that were proposed by Westermann and new data from New Zealand Monotis laid the basis for the present proposal of five subgenera. Monotis s.s. resembles the salinaria group; M. (Entomonotis) (type species M. richmondiana Zittel) includes the ochotica, subcircularis, and zabaikalica groups; M. (Eomonotis) n. subgen. (type species M. typica (Kiparisova ) is equivalent to the typica group; M. (Maorimonotis n. subgen, (type species M. routhieri Avias) covers the calvata group of Grant-Mackie; and M. (Inflatomonotis) n. subgen, (type species M. hemispherica Trechmann) is erected for a form previously included in the ochotica group. Two species cannot be classified subgenerically. Lower Jurassic species from eastern U.S.S.R. and Italy are tentativ...

Sedimentary rocks within the Whangaparaoa area are divided into two groups. Of these, one group and three formations are newly established and one formation is redefined; another previously accepted formation is discarded. Poorly exposed, unfossiliferous Haumurian-Teurian sediments are included within the Mangatu Group which is not further subdivided. Coarse lithologies which grade up the stratigraphic sequence into interbedded thin sandstones and grey mudstones containing basal Miocene microfaunas are included within the Whakai Formation. The Wharekahika Formation, which was erected by Ongley and MacPherson in 1928 and regarded as of probable Pliocene age, is discarded because it cannot now be readily identified and the fauna listed for it is likely to be a mixed one. Strata of the Runaway Group which crop out over large portions of the Whangaparaoa area comprise two formations—the Te Kahika Formation of Opoitian age and the Whangaparaoa Pumiceous Sandstone of Opoitian to ? Waipipian age. Fossil...

(1972). Correlation Of The Te Papa And Otamaroa Terraces, Eastern Bay Of Plenty. New Zealand Journal of Geology and Geophysics: Vol. 15, No. 1, pp. 186-191.

Summary Trias-Jura rocks of the Awakino-Mahoenui area constitute part of the western limb of the Kawhia Syncline in its southern-most exposure. The syncline is approximately meridional in alignment and pitches northwards at a low angle. Strata have dips varying from nearly vertical in the west of the area to about 15° east at the top of the succession in the east. The strata form the Herangi Range which originated as a north-south fold or the peneplained surface resulting from the post-Hokonui orogeny. This fold is believed to be faulted on its western edge, but while this is also the case on the eastern limb farther north, in the Awakino-Mahoenui area faulting seems not to have occurred at the surface. The oldest beds exposed are 7,000 ft of Oretian (lower Carnian) which are believed to be the equivalent of 2,100 ft of strata above the Moeatoa conglomerate at Marakopa. These are followed conformably by 2,200 ft of Otamitan strata (Carnian), 1,800 ft to 2,300 ft of Warepan (Norian), 2,800 ft of Otapirian ...

More than 70 macrofossil taxa (including 14 bivalves, 6 gastropods, 8 corals, 4 echinoderms, and 10 barnacles) are recorded from early Miocene (Otaian) Kawau Subgroup strata (Cape Rodney Formation and Motuketekete Limestone, lower Waitemata Group) at Motuketekete Island, Hauraki Gulf, north of Auckland City. Both in situ and transported fossils occur in deposits of greywacke boulder conglomerate, cobble to pebble conglomerate/sandstone, bioclastic calcareous grainstone, and an allochthonous breccia debris event unit, which correspond to lithofacies A, C, D, and E, respectively, of Ricketts et al. Greywacke boulders accumulated at the base of a greywacke paleocliff or sea stack that was planed off at its top to form a shore platform during the Miocene. A >2 m long, 16 cm thick coral colony grew atop a mixed substrate of boulders, pebbles, and sand, and exhibits two successional regrowth phases following debris‐influx events. Boulders and cobbles bored by pholadid bivalves (Parapholas aucklandicum ...

As part of his monographic study of the Tertiary Mollusca of the Gisborne district of North Island, New Zealand, Marwick (1931: 58) described a new glycymeridid, which he called Glycymeris reevei, from the Middle Miocene Tutamoe Formation. Unfortunately, the specific name reevei is preoccupied in the Recent Philippine species Glycymeris reevei (Mayer 1868: 23, as Pectunculus), a name in general used among Japanese and Filipino malacologists. We are not aware of any junior synonym of Marwick’s species, and, therefore, we propose to provide the name Glycymeris marwicki for Glycymeris reevei Marwick, non Mayer.