6533b7ddfe1ef96bd127549e

RESEARCH PRODUCT

The marine diapsid reptile Endennasaurus from the Upper Triassic of Italy

Silvio RenestoJohannes MüllerSusan E. Evans

subject

biologyRostrumAskeptosaurusPaleontologyPostcraniamarinepalaeoecologybiology.organism_classificationDiapsidTriassicMegalancosaurusreptilesNeodiapsidaPaleontologyItaly reptiles Thalattosauriformes Triassic marine palaeoecologyEndennasaurusItalyMarine reptileEcology Evolution Behavior and SystematicsGeologyThalattosauriformes

description

The marine reptile Endennasaurus from the Upper Triassic Zorzino Limestone of northern Italy is rede- scribed and reassessed. New details of the skull and postcra- nial skeleton are revealed, confirming the attribution of this genus to the diapsid reptile clade Thalattosauriformes. Phylo- genetic analysis suggests that Endennasaurus was related to the European genus Askeptosaurus and the Chinese Anshun- saurus. Despite a rather conservative postcranial morphology, Endennasaurus clearly occupied a highly specialized dietary niche as it combined a slender tapering premaxillary rostrum with a complete absence of either marginal or palatal teeth.

10.1111/j.1475-4983.2004.00434.xhttp://hdl.handle.net/11383/1498720