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New notosuchian Caipirasuchus from Brazil



From: Ben Creisler
bh480@scn.org

A new paper in JVP:

Fabiano V. Iori & Ismar S. Carvalho (2011)
Caipirasuchus paulistanus, a new sphagesaurid (Crocodylomorpha,
Mesoeucrocodylia) from the Adamantina Formation (Upper Cretaceous,
Turonian?Santonian), Bauru Basin, Brazil.
Journal of Vertebrate Paleontology 31(6):1255-1264
DOI:10.1080/02724634.2011.602777
http://www.tandfonline.com/doi/abs/10.1080/02724634.2011.602777

A skull and mandible of a new species of notosuchian, Caipirasuchus
paulistanus, belonging to the Sphagesauridae, were discovered in the rocks
of the Adamantina Formation (Bauru Basin: Late Cretaceous). The main
autapomorphies are external naris bordered only by premaxillae; very high
pterygoids and ectopterygoids; palatines contacting maxillae by a cuneiform
process; well-developed oval antorbital fenestra; premaxilla with four
teeth; dentary with ten teeth and two diastemata; and one diastema in the
premaxilla and another between the fourth alveolus of the premaxilla and
the first of the maxilla. Morphological analysis and experimental data
suggest an animal with a powerful bite and a dentition with specific
regions of action, one adapted to apprehension and the other to food
processing.



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