Oryctos
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Accès privé :
| volume 6, 2006 |
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Marie-Céline Buchy, Eberhard Frey, Wolfgang Stinnesbeck & José Guadalupe Lopez-Oliva, An annotated catalogue of the Upper Jurassic (Kimmeridgian and Tithonian) marine reptiles in the collections of the UniversidadAutónoma de Nuevo León, Facultad de Ciencias de la Tierra, Linares, Mexico. Oryxtos 6, 1-18.
We present an annotated catalogue of the Late Jurassic marine reptiles held in the collections of the Universidad Autónoma de Nuevo León, Facultad de Ciencias de la Tierra, in Linares, Mexico (UANL-FCT). Most of the specimens are fragmentary because they were collected in the frame of geological surveys. The collections comprise the holotype of the recently described thalattosuchian Geosaurus vignaudi, from the Tithonian (Late Jurassic) of Puebla State. The collections of the UANL-FCT additionally document a new marine reptile assemblage from the Kimmeridgian (Late Jurassic) of north-eastern Mexico, which represents groups hitherto unknown from the Late Jurassic Mexican Gulf. The assemblage comprises thalattosuchians, ichthyosaurs, pliosaurs, and a single elasmosaur vertebra. Most of the diagnostic specimens are endemic to at least the species level, confirming the partial isolation of the Mexican Gulf during the Late Jurassic, as suggested on the basis of invertebrate assemblages. The composition of this new tetrapod assemblage is compared to the Late Jurassic marine tetrapod assemblages of Europe and South America.
Key words: Thalattosuchia, Ichthyosauria, Plesiosauria, Late Jurassic, Mexico, palaeobiogeography
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