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1 March 2005 A NEW SEBECOSUCHIAN CROCODYLIFORM FROM THE LATE CRETACEOUS OF PATAGONIA
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Abstract

A well-preserved dentary from the Late Cretaceous of Neuquén Province, Argentina, represents a new taxon of sebecosuchian crocodyliform, Pehuenchesuchus enderi. The specimen retains a number of diagnostic characters and is referable to Sebecosuchia on the basis of two derived features (a longitudinal groove on the lateral surface of the dentary and a sigmoidal tooth row in dorsal view). The new taxon differs from all other sebecosuchians by possessing laterally compressed teeth that lack serrated carinae. A phylogenetic analysis of 30 crocodyliform taxa and two character-taxon matrices, which include many putative sebecosuchians, supports a monophyletic Sebecosuchia. In both analyses, Pehuenchesuchus enderi was resolved as the sister taxon to all other sebecosuchians. A clear division of Sebecosuchia into Sebecidae and Baurusuchidae was not supported.

ALAN H. TURNER and JORGE O. CALVO "A NEW SEBECOSUCHIAN CROCODYLIFORM FROM THE LATE CRETACEOUS OF PATAGONIA," Journal of Vertebrate Paleontology 25(1), (1 March 2005). https://doi.org/10.1671/0272-4634(2005)025[0087:ANSCFT]2.0.CO;2
Accepted: 5 July 2004; Published: 1 March 2005
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