Uberabatitan Ribeiroi, a New Titanosaur From the Marília Formation (bauru Group, Upper Cretaceous), Minas Gerais, Brazil
Year: 2008
Type: article
Abstract: : A new Late Cretaceous titanosaur sauropod from the Bauru Basin of Brazil,Uberabatitan ribeiroigen. et sp. nov., represented by at least three specimens, is described. The material comes from a level of coarse sandstone within the Serra da Galga sequence in Uberaba County, Minas Gerais State. The fossiliferous strata belong to the Marília Formation (Serra da Galga Member), Bauru Group, considered to be Maastrichtian in age. The fossils occur in the uppermost levels of the above‐mentioned unit; thus,Uberabatitan ribeiroiis the youngest titanosaur to have been recorded from the Bauru Basin. The autapomorphies that support the new species are: (1) anterior and mid‐cervicals with postzygodiapophyseal lamina (podl) segmented in zygapophyseal and diapophyseal laminae, of which the first extends rostrodorsally over the second; (2) mid‐dorsals with a robust lateral lamina formed mainly by a diapophyseal lamina (probably homologous to the postzygodiapophyseal lamina), and, to a lesser extent, by a relic of the spinodiapophyseal lamina (spdl); (3) mid (and probably posterior) dorsals with accessory neural laminae, which are lateral to the prespinal lamina, and probably homologous to the spinoprezygapophyseal laminae (sprl); (4) mid‐caudal centra with deeply excavated lateral faces; (5) pubis very thick and robust, with a very stout longitudinal crest on its external (ventral) face; and (6) proximal end of the tibia with a prominent lateral protuberance, which articulates with an equally prominent medial knob of the fibula. The titanosaurian assemblage at Uberaba includes, apart fromU. ribeiroi, well‐preserved specimens assigned to species of uncertain affinities (Trigonosaurus priceiandBaurutitan britoi), as well as a few vertebrae assigned to aeolosaurines.
Source: Palaeontology
Authors: LEONARDO SALGADO, ISMAR DE SOUZA CARVALHO
Language: English
Subfield: Paleontology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
Funders: Consejo Nacional de Investigaciones Científicas y Técnicas, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Fundação de Amparo à Pesquisa do Estado de Minas Gerais, Universidad Nacional de Cuyo, Universidade Federal do Rio de Janeiro
OpenAlex ID: W2070197359