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Baurutitan and Trigonosaurus




I haven't seen either papers (though I would dearly love to). Both genera are new titanosaurs from Brazil. These titanosaurs are coming out of the woodwork.


_Baurutitan britoi_

Kellner, A.W.A., Campos, D.A. and Trotta, M.N.F. 92005). Description of a titanosaurid caudal series from the Bauru Group, Late Cretaceous of Brazil. Arquivos do Museu Nacional 63 (3): 529-564.

Abstract: "A new titanosaurid, _Baurutitan britoi_ n. gen., n. sp., is described and compared with other taxa of that sauropod clade. The specimen (MCT 1490-R) consists of the last sacral followed by a sequence of 18 caudal vertebrae that were found in the continental deposits of the Late Cretaceous Bauru Group that outcrop at the Peirópolis region, near the town of Uberaba, State of Minas Gerais, Brazil. This new taxon is distinguished from other titanosaurians by several features, including subrectangular to square outline of the anterior articulation surface of the anterior and middle caudals, strongly pointed laterally directed process intercepting the spinoprezygapophyseal lamina in caudal 1; dorsal prezygapophyseal tuberosity on the lateral margin of the prezygapophyses of caudals 2-4, that smoothens out in midcaudals. This material demonstrates that the horizontal ridge present in middle and posterior caudals of some titanosaurs, in _Baurutitan britoi_ is homologous with a dorsal tuberosity and not with the transverse process."


_Trigonosaurus pricei_

Campos, D.A., Kellner, A.W.A., Bertini, R.J. and Santucci, R. M. (2005). On a titanosaurid (Dinosauria, Sauropoda) vertebral column from the Bauru Group, Late Cretaceous of Brazil. Arquivos do Museu Nacional 63 (3): 565-593.

Abstract: "A new titanosaurid dinosaur from the Late Cretaceous continental deposits of the Bauru Group is described. _Trigonosaurus pricei_ n. gen., n. sp., is based on two specimens, both collected at the Caieira Quarry near Peirópolis, Minas Gerais. The holotype consists of the five most posterior cervical vertebrae, 10 dorsals, six sacrals and the left ilium (MCT 1488-R). The second specimen (paratype) consists of 10 caudal vertebrae that according to a quarry map, were found isolated but show a similar morphology and compatible size suggesting that they belonged to one individual (MCT 1719-R). _Trigonosaurus pricei_ is diagnosed by a combination of characters such as elongated cervicals and middorsals, dorsal vertebrae 9 and 10 with incipient postzygodiapophyseal lamina and transverse processes well developed throughout the sequence formed by anterior and medial caudals. The occurrence of this new taxon indicates a higher diversity of titanosaurids in the Brazil during the Cretaceous period."