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XIV Annual Meeting of the European Association of Vertebrate Palaeontologists

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XIV Annual Meeting of the European Association of Vertebrate Palaeontologists XIV Annual Meeting of the European Association of Vertebrate Palaeontologists 6-10 July 2016, Haarlem, The Netherlands Programme and Abstract Book Edited by: EAVP 2016 Programme & Abstract Committee Femke Holwerda, Anneke Madern, Dennis Voeten, Anneke van Heteren, Hanneke Meijer, Natasja den Ouden EAVP 2016 Programme & Abstract Crew Stephan Spiekman, Tom Trapman, Feiko Miedema, Sifra Bijl, Mart Smeets, Pim Kaskes, Tim Rietbergen, Juliën Lubeek XIV EAVP Meeting, 6-10 July, 2016, Haarlem, The Netherlands THE HERPETOFAUNA FROM THE LATE TRIASSIC OF THE JAMESON LAND BASIN (EAST GREENLAND): REVIEW AND UPDATES M. Marzola1,2,3,4*, O. Mateus1,3, O. Wings5, N. Klein6, J. Mìlan7,8, and L.B. Clemmensen2 1Universidade Nova de Lisboa, GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Quinta da Torre, 2829-516 Caparica, Portugal 2University of Copenhagen, IGN, Department of Geosciences and Natural Resource Management, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark 3Museu da Lourinhã, Rua João Luís de Moura, 95, 2530-158 Lourinhã, Portugal 4Geocenter Møns Klint, Stengårdsvej 8, DK-4751 Borre, Denmark 5Landesmuseum Hannover, Willy-Brandt-Allee 5, 30169 Hannover, Germany 6State Museum of Natural History Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany 7Geomuseum Faxe/Østsjællands Museum, Østervej 2, DK-4640 Faxe, Denmark 8University of Copenhagen,Natural History Museum of Denmark, Øster Voldgade 5-7, DK- 1350 Copenhagen K, Denmark *[email protected] The Norian-Rhaetian Fleming Fjord Formation (lacustrine and fluvial deposits) in the Jameson Land Basin (East Greenland) is rich in vertebrate fossils, recording all main groups of vertebrates known from the Late Triassic. Fishes, amphibians, a plethora of reptilians (including Testudines, Aetosauria, Phytosauria, Pterosauria, and Dinosauria), and early mammals compose the richness and completeness of the vertebrate record from this region of Greenland, explored with expeditions since the 1970’s. Thus far, only the temnospondyl Gerrothorax pulcherrimus, the pterosaur Eudimorphodon cromptonellus, and the mammaliaform Haramiyavia clemmenseni have been subject of detailed anatomical and phylogenetic studies. Besides the reptilian and amphibian material known from the 90’s, which includes among others a Cyclotosaurus skull, a basal testudine, two species of aetosaurs, and prosauropod dinosaurs, an expedition in 2012 collected a new testudine specimen and at least four individuals of phytosaurs The record of Testudines from the Fleming Fjord Formation seems particularly rich. At least three specimens have been found and are currently under study. The only already published specimen (MCZ field number 22/88G) was putatively described in 1994 as cf. Proganochelys; at that time the only well-known Late Triassic turtle in the world. This individual is the stratigraphically youngest of the three Greenlandic collected specimens (circa 208 Ma). Its association with Proganochelys was based on the pairs of gular and intergular projections and on the dorsal epiplastral process. Since the report, gular projections have also been described in Odontochelys, from the Late Triassic of China, making this character not autapomorphic for Proganochelys anymore. In addition, the dorsal epiplastral process is currently known both in Odontochelys and Kayentachelys, an Early Jurassic turtle from Arizona. The specimen collected in 2012 (NHMD-VP-9516) is older in geological age (about 209 Ma) and presents a unique imbrication pattern of the carapace bones: each costal overlaps the previous one up to 1 cm, and the peripherals constantly overlap the costals. A third previously unreported specimen collected in 1995 (NHMD-VP-2014) is yet undated, but possibly covers the gap between 209 and 208 Ma. Some of its well-preserved limb bones present distinct new characters among the known Late Triassic testudines. 182 .
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