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Unaysaurus tolentinoi II
Here's the citation, with the abstract
Luciano A. Leal, Sergio A.K. Azevedo, Alexander W.A. Kellner and Átila A. S.
Da Rosa. (2004). A new early dinosaur (Sauropodomorpha) from the Caturrita
Formation (Late Triassic), Paraná Basin, Brazil. Zootaxa 690: 1-24.
Abstract
A new early dinosaur, _Unaysaurus tolentinoi_ gen. et sp. nov., from the
continental Late Triassic red beds of the Caturrita Formation
(Carnian-Norian, c. 225 million years old) of southern Brazil is
described. _U. tolentinoi_ is represented by a semi-articulated skeleton
comprising an almost complete skull, lower jaw and postcranial elements. It
differs from all other dinosaurs by several cranial (e.g. developed
laterodorsally oriented process formed by frontal and parietal; deep ventral
depression on the basisphenoid) and postcranial (presence of a conspicuous
blunt ridge running on the lateral surface of the deltopectoral crest of
humerus) characters. _Unaysaurus_ represents the first ?prosauropod? grade
dinosaur from Brazil and a preliminary phylogenetic analysis indicates it to
be closely related to the European _Plateosaurus_ (Plateosauridae). The
relationships of the ?Prosauropoda?, however, are still controversial and
more comprehensive studies are needed before a clear picture of the
evolution and paleobiogeographic distributions of these dinosaurs can be
presented.