Revisão dos fósseis de Titanosauria (Saurischia, Sauropoda) do Neo-Cretáceo do Grupo Bauru, formações Adamantina, Uberaba e Marília, Bacia do Paraná, Sudeste do Brasil
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Data
2022-01-19
Autores
Melo, Ariana Carmelin de Sousa
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Universidade Estadual Paulista (Unesp)
Resumo
O Grupo Bauru é uma região geológica de grande importância paleontológica, sendo representada por diversos grupos paleobióticos, entre eles se destaca o Clado Titanosauria, pela quantidade expressiva de fósseis a ele atribuido, coletados nos afloramentos desta unidade geológica. Até o momento foram descritas, para esta unidade, as espécies Gondwanatitan faustoi, Adamantisaurus mezzalirai, Maxakalisaurus topai, Aeolosaurus maximus, Brasilotitan nemophagus, Austroposeidon magnificus, Trigonosaurus pricei, Baurutitan britoi e Uberabatitan ribeiroi. O presente trabalho teve como objetivo efetuar uma revisão dos fósseis previamente descritos de titanosauros procedentes do Grupo Bauru, e realizar uma análise filogenética dos morfótipos formalmente descritos. No estudo se teve confirmado o observado nas análises anteriores de Santucci (2002, 2005), onde a maioria dos morfótipos do Grupo Bauru são próximos filogeneticamente, aqui interpretados como pertencentes ao Grupo Aeolosaurini. Também foi observada uma próximidade filogenética de eolossaurinos e saltassaurinos. Os diversos registros de titanossauros aqui levantados também contribuem com as evidências geológicas de que no Grupo Bauru prevalecia um paleoambiente semi-árido.
The Bauru Group is a geological region of great paleontological importance, being represented by several paleobiotic groups, among them the Titanosauria Clade stands out, due to the expressive amount of fossils attributed to it, collected in the outcrops of this geological unit. So far, the species Gondwanatitan faustoi, Adamantisaurus mezzalirai, Maxakalisaurus topai, Aeolosaurus maximus, Brasilotitan nemophagus, Austroposeidon magnificus, Trigonosaurus pricei, Baurutitan britoi and Uberabatitan ribeiroi have been described for this unit. The present work aimed to carry out a review of previously described fossils of titanosaurs from the Bauru Group and to carry out a phylogenetic analysis of the morphotypes formally described. In the study it was confirmed what was observed in the previous analyzes by Santucci (2002, 2005), where most morphotypes of the Bauru Group are phylogenetically close, here interpreted as belonging to the Aeolosaurini Group, a phylogenetic closeness of aelosaurines and saltasaurines was also noted. The various records of titanosaurs surveyed here also contribute to the geological evidence that a semi-arid paleoenvironment prevailed in the Bauru Group.
The Bauru Group is a geological region of great paleontological importance, being represented by several paleobiotic groups, among them the Titanosauria Clade stands out, due to the expressive amount of fossils attributed to it, collected in the outcrops of this geological unit. So far, the species Gondwanatitan faustoi, Adamantisaurus mezzalirai, Maxakalisaurus topai, Aeolosaurus maximus, Brasilotitan nemophagus, Austroposeidon magnificus, Trigonosaurus pricei, Baurutitan britoi and Uberabatitan ribeiroi have been described for this unit. The present work aimed to carry out a review of previously described fossils of titanosaurs from the Bauru Group and to carry out a phylogenetic analysis of the morphotypes formally described. In the study it was confirmed what was observed in the previous analyzes by Santucci (2002, 2005), where most morphotypes of the Bauru Group are phylogenetically close, here interpreted as belonging to the Aeolosaurini Group, a phylogenetic closeness of aelosaurines and saltasaurines was also noted. The various records of titanosaurs surveyed here also contribute to the geological evidence that a semi-arid paleoenvironment prevailed in the Bauru Group.
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Grupo Bauru, Campaniano-Maastrichiano, Saurópodos, Titanosauria, Bauru Group, Campanian-Maastrichtian, Sauropods