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Megaraptoran (Theropoda) vertebra from Brazil



From: Ben Creisler
bcreisler@gmail.com

A new online paper. The abstract link has photos and illustrations.



Ariel H. Méndez, Fernando E. Novas  Fabiano V. Iori (2012)
First record of Megaraptora (Theropoda, Neovenatoridae) from Brazil.
Comptes Rendus Palevol (advance online publication)
http://dx.doi.org/10.1016/j.crpv.2011.12.007
http://www.sciencedirect.com/science/article/pii/S1631068312000267

Abstract
An isolated caudal vertebral centrum of a theropod dinosaur was
discovered in the Bauru Basin (Late Cretaceous) of Brazil, in the
Maastrichtian São José do Rio Preto Formation. The vertebral centrum
has pneumatic features that are similar to those in the megaraptoran
theropods Aerosteon, Megaraptor, and Orkoraptor. For example, all
these taxa share with the caudal centrum here described the presence
of true pleurocoels or pneumatic foramina, immersed within a
depression or fossa. Thus, the specimen is considered the first record
of Megaraptora in Brazil. The present analysis provides new
information on the vertebral caudal anatomy of this clade of bizarre
Cretaceous theropods.