期刊
CRETACEOUS RESEARCH
卷 95, 期 -, 页码 89-105出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cretres.2018.11.008
关键词
Barrosasuchus; Peirosauridae; Crocodyliformes; Santonian; Upper Cretaceous; Patagonia
资金
- NSERC [203091-06]
- Troodon Resources (Calgary, Canada)
- Dinosaur Research Institute (Calgary, Canada)
A new peirosaurid crocodyliform from the Upper Cretaceous (Santonian) of South America, Barrosasuchus neuquenianus gen. et sp. nov. is here described. Barrosasuchus is distinguished by a combination of features that include: presence of a foramen at the mid-point of the dorsal surface of the mandibular symphysis; quadratojugal dorsally broad, extensively contacting the postorbital articulation; absence of ventral exposure of splenials along mandibular rami, posterior to the symphysis; mid to posterior teeth with roots and crowns highly compressed laterally; presence of longitudinal depressions on palatal surface of maxillae; and anterior dentary alveoli strongly procumbent. The holotype specimen of Barrosasuchus neuquenianus, MCF-PVPH-413 is represented by an almost complete skull and most of the articulated postcranial skeleton. Thus, Barrosasuchus is currently the most complete peirosaurid taxon known from Patagonia, and represents a key element for future reviews of the phylogeny of the group. Peirosauridae represents a successful Glade in Gondwana, and particularly in Patagonia, with at least six distinct genera currently recorded. (C) 2018 Elsevier Ltd. All rights reserved.
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