摘要
The marine reptile Endennasaurus from the Upper Triassic Zorzino Limestone of northern Italy is redescribed and reassessed. New details of the skull and postcranial skeleton are revealed, confirming the attribution of this genus to the diapsid reptile clade Thalattosauriformes. Phylogenetic analysis suggests that Endennasaurus was related to the European genus Askeptosaurus and the Chinese Anshunsaurus. 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.
摘要译文
海洋爬行动物埃登那龙属，从意大利北部的上三叠统Zorzino石灰石被重新描述和重新评估。颅骨和颅后骨骼的新细节被披露，确认该属的爬行动物双孔亚纲分支Thalattosauriformes的归属。系统发育分析表明，埃登那龙属是有关欧洲属阿氏开普吐龙属和中国安顺龙。尽管相当保守的颅后形态，埃登那龙属明显占据了高度专业化的饮食利基，因为它结合修长尖细前颌骨与主席台完全没有任何边际或腭的牙齿。
JOHANNES MüLLER[1]; SILVIO RENESTO[2] and SUSAN E. EVANS[3];. The marine diapsid reptile Endennasaurus from the Upper Triassic of Italy[J]. Palaeontology, 2005,48(1): 15-30