Glyphiteuthis rhinophora n. sp., a trachyteuthidid (Coleoidea,Cephalopoda) from the Cenomanian (Late Cretaceous) of Mexico |
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| Authors: | Dirk Fuchs Wolfgang Stinnesbeck Christina Ifrim Samuel Giersch José Manuel Padilla Gutierrez Eberhard Frey |
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| Affiliation: | 1.Institut für Geologische Wissenschaften,Freie Universit?t Berlin,Berlin,Germany;2.Institut für Geowissenschaften,Ruprecht-Karls-Universit?t,Heidelberg,Germany;3.Staatliches Museum für Naturkunde,Karlsruhe,Germany;4.Museo del Desierto,Saltillo,Mexico |
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| Abstract: | A new vampyropod coleoid from the Cenomanian limestones of Coahuila (Mexico) is described. Glyphiteuthis rhinophora n. sp. is classified as a member of the Trachyteuthididae because of its general gladius morphology. Within the genus Glyphiteuthis, Gl. rhinophora n. sp. is unique by its nose-shaped extension of the anterior median field extremity. The ventral gladius surface reflects the dorsal surface and lacks evidence of a phragmocone, so affiliations with sepiids are unlikely. Gl. rhinophora n. sp. represents the first Cenomanian record of a vampyropod coleoid in the New World and the first evidence of the genus outside the Tethyan and Boreal realm. The paleoenvironment indicates a nektonic lifestyle for Gl. rhinophora n. sp. |
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