Basilochelys macrobios n. gen. and n. sp.
Publicado: Vie 22 May, 2009 3:50 pmBasilochelys macrobios n. gen. and n. sp., a large cryptodiran turtle from the Phu Kradung Formation (latest Jurassic-earliest Cretaceous) of the Khorat Plateau, NE Thailand
Haiyan Tong1, Julien Claude2, Wilailuck Naksri3, Varavudh Suteethorn4, Eric Buffetaut5, Sasidhorn Khansubha4, Kamonrak Wongko4 & Phisit Yuangdetkla4
116 cour du Liégat, 75013 Paris, France
2ISE-M, UMR 5554 CNRS, Université de Montpellier 2, 34095 Montpellier, France
3Sirindhorn Museum, Sahatsakhan, Kalasin 46140, Thailand
4Bureau of Fossil Research and Museum, Department of Mineral Resources, Rama VI Road, Bangkok 10400, Thailand
5CNRS (UMR 8538, Laboratoire de Géologie de l'Ecole Normale Supérieure), 24 rue Lhomond, 75005 Paris, France. Solo usuarios registrados se encuentran habilitados a visualizar los enlaces. Gracias por su visita.
Fuente: E. Buffetaut, G. Cuny, J. Le Loeuff & V. Suteethorn (eds.), Late Palaeozoic and Mesozoic Ecosystems in SE Asia. Geological Society, London, Special Publications 315: 229-243. DOI: 10.1144/SP315.16
Haiyan Tong1, Julien Claude2, Wilailuck Naksri3, Varavudh Suteethorn4, Eric Buffetaut5, Sasidhorn Khansubha4, Kamonrak Wongko4 & Phisit Yuangdetkla4
116 cour du Liégat, 75013 Paris, France
2ISE-M, UMR 5554 CNRS, Université de Montpellier 2, 34095 Montpellier, France
3Sirindhorn Museum, Sahatsakhan, Kalasin 46140, Thailand
4Bureau of Fossil Research and Museum, Department of Mineral Resources, Rama VI Road, Bangkok 10400, Thailand
5CNRS (UMR 8538, Laboratoire de Géologie de l'Ecole Normale Supérieure), 24 rue Lhomond, 75005 Paris, France. Solo usuarios registrados se encuentran habilitados a visualizar los enlaces. Gracias por su visita.
A large cryptodiran turtle, Basilochelys macrobios n. gen. n. sp. is described from the latest Jurassic–earliest Cretaceous Phu Kradung Formation of NE Thailand, on the basis of skull, shell and other postcranial elements. Basilochelys presents a combination of primitive and derived characters. The derived characters include sculptured skull roof and shell surface; deeply embedded canalis caroticus internus; foramen posterius canalis carotici interni completely surrounded by pterygoid; neural formula of 6>4<6<6<6<6; anteroposteriorly expanded eleventh and twelfth marginal scutes extending onto the suprapygal and costal plates; narrow vertebral scutes; plastron sutured to the carapace, with large and wide anterior and posterior lobes, long and narrow bridge, very narrow axillary and inguinal notch; wide entoplastron; humeropectoral sulcus located on the posterior part of the entoplastron; anal notch absent. This taxon is placed in Trionychoidae and considered as the most basal member of that group.
Fuente: E. Buffetaut, G. Cuny, J. Le Loeuff & V. Suteethorn (eds.), Late Palaeozoic and Mesozoic Ecosystems in SE Asia. Geological Society, London, Special Publications 315: 229-243. DOI: 10.1144/SP315.16