Revision of MUCPv 204, a Senonian Basal Titanosaur from Northern Patagonia.

BIBLIOGRAFIA
Nominativo AutoriJUAREZ VALIERI R. D., CALVO J. O.
Anno2011
TitoloRevision of MUCPv 204, a Senonian Basal Titanosaur from Northern Patagonia.
InDinosaurios y Paleontología desde América Latina. Anales del III Congreso Latinoamericano de Paleontología. J. O. Calvo, J. D. Porfiri, B. J. González Riga, D. Dos Santos
EdizioneEditorial de la Universidad Nacional de Cuyo, Neuquén
Serie Volume143-152
IllustrazioniFIGG. 2
Parole chiave / Key words Paleontologia, Vertebrata, Dinosauri, Cretaceous, Titanosauria, Titanosauridae, Traukutitan eocaudata.
Riassunto / AbstractCretaceous of South America. With around thirty valid species, these dinosaurs covered many of the herbivorous ecological niches in this continent (Salgado e Bonaparte, 2007). One of the first characters noted for the titanosaurians was the existence of procoelic caudal vertebrae, and originally was utilized in the diagnosis of the type of the group, the genus Titanosaurus. With a more complete fossil record, was evident that this character was distributed in a more compresive group, the traditional Titanosauridae (Powell, 2003). Salgado and Calvo (1993) described a notable partial skeleton of a titansaurian (MUCPv 204) that contained the tipical procoelic caudals restricted to the anterior caudals, but with “amphiplatyan” middle caudal vertebrae. These remains were recovered from sediments of Late Cretaceous age, and this animal was considered as a late survivor of basal titanosaur lineages, although their stratigraphic position was controversial (Juárez Valieri et al., this volume). A review of the type locality allow us to specify the stratigraphical unit of procedence. Here, we redescribe the specimen MUCPv 204, generating comparisson with new titanosaur taxa with similar morphological conditions, and discusse the biostratigraphic implicances of this new taxon.
Note GeograficheArgentina, Patagonia Region, Neuquén Province, Lago Barreales, Sitio Trauku. Bajo de la Carpa Formation.