Sylvie Crasquin-Soleau

Erosional truncation of uppermost Permian shallow-marine carbonates and implications for Permian - Triassic boundary events: Comment.

[Payne et al. (2007)][1] suggest that there is widespread evidence for a carbonate dissolution surface at the level of the end-Permian mass extinction, and that this crisis was at least partly due to ocean acidification that preferentially affected heavily calcified marine invertebrates. These ideas

The Oman Gharif mixed paleoflora: a useful tool for testing Permian Pangea reconstructions

Abstract The discovery of a Middle Permian fossil flora in the continental Gharif Formation (Huqf area, Sultanate of Oman), combined with an ostracod fauna in the overlying marine Khuff Formation, provides new data that further refine paleogeographical reconstructions of the Paleo-Tethys during the Late Paleozoic. The macro- and microfloral assemblages, originating from a single fossiliferous bed of the Gharif Formation, demonstrate that this paleoflora represents a true mixture of Gondwanan, Cathaysian and Euramerican elements. These data furthermore show that the Huqf area occupied a paleogeographical location favorable for floral exchange at this time. The composition of this flora and its dating are of significance with regard to the relative position of the Arabian Peninsula during the Permian. The presence of forms belonging to the tropical rain forest of the Permian Cathaysian paleokingdom emphasizes the close relationship of the southwestern Paleo-Tethys realm and South China, two regions that were then characterized by the same climatic conditions. For this period, our new data indicate for this period a lower latitude for the Arabian plate and a much more reduced oceanic space between the Cathaysian blocks and the Arabian Peninsula. Therefore, the new data are more in accordance with the recently actualized Pangea B model, than with other, previously proposed Permian Pangea models.

Palaeocopida (Ostracoda) across the Permian–Triassic events: new data from southwestern Taurus (Turkey)

The Palaeocopida have been considered as an entirely Palaeozoic group and their disappearance as a marker for the Palaeozoic–Mesozoic boundary. Despite this, 11 Palaeocopida species have been recorded in the Early Triassic. New data obtained in southwestern Taurus at the Permian– Triassic section of Çürük daǧ, permit an assessment of this problem. This paper synthesizes the data on lowermost Triassic ostracodes and revises the youngest Palaecopida occurrences. A new Early Triassic Palaeocopida species is described (Reviya curukensis n. sp.).

PALAEOECOLOGICAL CHANGES AFTER THE END-PERMIAN MASS EXTINCTION: EARLY TRIASSIC OSTRACODS FROM NORTHWESTERN GUANGXI PROVINCE,SOUTH CHINA

Early Triassic (Griesbachian to Spathian) ostracod faunas are here first discovered and described form the Guangxi Province, South China. Thirty-seven species belonging to fourteen genera are recognized. Seven species are new: Bairdia fengshanensis n.sp., Bairdia wailiensis n.sp., Liuzhinia guangxiensis n.sp., Ptychobairdia luciaae n.sp., Ptychobairdia aldaae n.sp., Paracypris jinyaensis n.sp. and Paracypris gaetanii n.sp. The Griesbachian assemblage from the basal microbial limestone is well diversified and does not suggest any abnormal palaeoenvironmental conditions in terms of salinity, temperature or oxygen content. Particularly, the ostracods are typical of well oxygenated water and do not reflect any anoxia. Dienerian and Smithian ostracods are evidenced for the first time and the assemblages suggest less favourable palaeoenviromental conditions. Diversity and abundance of ostracod assemblages recovered from the Spathian on. The main taxonomic turnover among ostracod assemblages occurred seemingly between the Griesbachian and the Spathian.

Latest Permian deep-water ostracods from Southwestern Guangxi, South China.

A very diverse ostracod fauna was discovered in the latest Permian strata of the Dongpan section, southwestern Guangxi, South China. Fifty-one species belonging to twenty-eight genera were identified and described, including two new species (Bairdia dongpanensis n. sp. and Spinomicrocheilinella anterocompressa n. sp). This type of assemblage, with nineteen palaeopsychrospheric species and four pelagic species, is the first world-wide deep-water ostracod fauna reported from the latest Permian strata and the first one recorded in the Permian of China. The palaeoenvironmental analysis allows one to propose an evaluation of the bathymetry variation along the Dongpan section.

Les événements de la limite Permien-Trias : Derniers survivants et/ou premiers re-colonisateurs parmi les ostracodes du Taurus (Sud-Ouest de la Turquie)

The events of the Permian-Trias boundary: last survivors and/or first colonisers among the ostracods of the Taurides (southwestern Turkey). Very few data on Early Triassic marine ostracods are available. In most of cases, the data concern the upper part of the Early Triassic. The Curuk da u g section, located in the Western Taurides (Turkey), well stratigraphically constrained by conodonts and foraminifera, has been re-sampled for ostracod study. A significant fauna has been discovered in the Late Permian and the levels of the Earliest Triassic (Hindeodus parvus and Isarcicella isarcica staeschei zones). The ostracods of the basis of the Kokarkuyu Fm. are the oldest Triassic forms ever discovered. The occurrence of Palaeocopes in the earliest Triassic and similarity between the Permian and Induan assemblages suggest that the Lower Triassic Curuk dau g ostracods represent a survival assemblage after the Permo-Triassic mass-extinction. To cite this article: S. Crasquin-Soleau et al., C. R. Geoscience 334 (2002) 489-495.  2002 Academie des sciences / Editions

Stratigraphic data of the Middle – Late Permian on Russian Platform

Abstract This paper presents the litho– and biostratigraphic data and correlations of the Middle and Late Permian (Ufimian, Kazanian and Tatarian) on the Russian Platform. The lithological descriptions and the paleontological content (foraminifera, bivalves, ostracods, brachiopods, vertebrates, plants and acritarchs) of the different units are exposed from the Barents Sea up to the Caspian Sea.

New Permian ostracods from Greece (Hydra Island)

A new Permian (Late Asselian–Dorashamian) ostracod fauna (66 species belonging to 35 genera) from Hydra Island (Greece) is described. Twelve new species are described: Hollinella (P.) hydraensis Crasquin-Soleau n.sp, Bairdia episkopiensis Crasquin-Soleau n.sp., Bairdia rigasensis Crasquin-Soleau n.sp., Bairdia thikiaensis Crasquin-Soleau n.sp., Chamishaella marmariensis Crasquin-Soleau n.sp., Cypridina gussevaae Crasquin-Soleau n.sp., Cyathus barmariensis Crasquin-Soleau n.sp., Cyathus klimakiensis Crasquin-Soleau n.sp., Bairdiacypris bistiensis Crasquin-Soleau n.sp., Shishaella hellenensis Crasquin-Soleau n.sp., Bairdia ishizakii Crasquin-Soleau n.sp., Petasobairdia kozuri Crasquin-Soleau n.sp. Forty-four other species are figured. This assemblage is characteristic of a shallow water platform. The palaeobiogeographic relationships are presented and represent significant additions to the Permian Palaeo-Tethyan ostracod faunas.

Middle and Late Permian stratigraphic correlations on the Russian Platform: significance of ostracodes

Abstract During the International Peri-Tethys Program, the realization of the maps required efficient correlation tools. During the Late Paleozoic and particularly during the Wordian (Middle Permian), the Russian Platform was under continental and/or marginal paleoenvironmental conditions. This paper draws up the synthesis of the ostracode species recognized in the Middle-Late Permian in this area, from the Barents Sea up to the Precaspian Depression, and shows their importance as a stratigraphic tool for the correlations of continental series.

A new ostracod (Crustacea) species (Geffenina wangi) from the Middle Permian of Jebel Gharif (Central Oman)

This paper describes Geffenina wangi a new species of ostracod and lists associated ostracod species discovered in the Khuff Formation, Middle Permian (Wordian) in the Jebel Gharif area (Central Oman).