A NEW NEOSUCHIAN CROCODYLOMORPH (CROCODYLIFORMES, MESOEUCROCODYLIA) FROM THE EARLY CRETACEOUS OF NORTH-EAST BRAZIL

被引：23
作者：
Fortier, Daniel C. [1 ]
Schultz, Cesar L. [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Dept Paleontol & Estratig, BR-91501970 Porto Alegre, RS, Brazil
来源：
PALAEONTOLOGY | 2009年 / 52卷
关键词：
Crocodyliformes; Mesoeucrocodylia; Neosuchia; Susisuchus; new species; Early Cretaceous; north-east Brazil; BASAL EUSUCHIAN CROCODYLIFORM; ARCHOSAURIA CROCODYLIFORMES; CRANIAL OSTEOLOGY; BASIN; PALEOCENE; PHYLOGENY; ANATOMY; ORIGIN; EOCENE; DYROSAURIDAE;
D O I：
10.1111/j.1475-4983.2009.00894.x
中图分类号：
Q91 [古生物学];
学科分类号：
0709 ; 070903 ;
摘要：
A new neosuchian crocodylomorph, Susisuchus jaguaribensis sp. nov., is described based on fragmentary but diagnostic material. It was found in fluvial-braided sediments of the Lima Campos Basin, north-eastern Brazil, 115 km from where Susisuchus anatoceps was found, in rocks of the Crato Formation, Araripe Basin. S. jaguaribensis and S. anatoceps share a squamosal-parietal contact in the posterior wall of the supratemporal fenestra. A phylogenetic analysis places the genus Susisuchus as the sister group to Eusuchia, confirming earlier studies. Because of its position, we recovered the family name Susisuchidae, but with a new definition, being node-based group including the last common ancestor of Susisuchus anatoceps and Susisuchus jaguaribensis and all of its descendents. This new species corroborates the idea that the origin of eusuchians was a complex evolutionary event and that the fossil record is still very incomplete.
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页码：991 / 1007
页数：17
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