II Encontro dos Programas de Pós-Graduação em Geociências, 2008 PALEOVERTEBRATES FROM THE GOIÁS STATE PEDRO OLIVEIRA PAULO E-mail: pedro@rc.unesp.br Orientador: Prof. Dr. Reinaldo José Bertini The Paleozoic strata, in the Goiás State, containing fossil vertebrates, up to now are restricted to the Irati and Corumbataí formations. The first one, from the Lower Permian Period, have yielded a vast number of mesosaurid remains. The second, Middle Permian in age, also outcrops on Central Goiás State, presenting some isolated and fragmented undescribed fish remains (teeth and scales). There are some areas in Brazil where, considering Upper Cretaceous strata, show several representative remains of a significative biotic diversity. One of the most important of these areas is the Bauru Basin, divided in two lithostratigraphic units, named Caiuá and Bauru groups. As one of the most expressive continental fossil assemblages from Brazil, the Bauru Group contains fossils associated to strata formed in depositional enviroments, mainly fluvial and lacustrine, covering areas in the states of Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná and São Paulo. The Bauru Group has an expressive occurrence on the Southern-Central portion of the Goiás State, where there are some Adamantina and Marília Formations outcrops. The Adamantina Formation has furnished several remains of vertebrate fossils, such as fishes, testudines, lacertilians, crocodyliforms, theropodomorphs, sauropods and mammals, from Minas Gerais and São Paulo states. Otherwise the Marília Formation occurs in the states of Goiás, Minas Gerais, and São Paulo. It has been rich in fossil remains, representing a wide array of taxons, such fishes, testudines, crocodyliforms, maniraptoriforms and sauropodomorphs. Despite both Marília and Adamantina formations, rich in fossil vertebrates, occur in the Goiás State, the fossil record related to these Cretaceous sequences only mentions some fossil localities, presenting citations, not descriptions of materials, about remains associated to theropodomorphs and sauropodomorphs. Therefore in these circumstances one may suppose that there are some regions on Southern-Central Goiás State that could shelter interesting prospectable vertebrate fossil outcrops. Then detailed searching and prospecting in these litostratigraphic units of the Bauru Basin, on the Goiás State, could yield new fossil remains, aiding to improve our understanding of the paleoecological, biochronological, paleobiogeographical comparisons to the vertebrate faunas previously revered in the Bauru Basin, especially from Minas Gerais and São Paulo states. In the same way it would also permit paleoecological, biochronological, paleobiogeographical comparisons to the Cambambe Group area, not associated to the Bauru Basin, located on the Mato Grosso State, until now not well known. Besides there are some areas, in the Goiás State, that have furnished some remains of fossil mammals, from both Pleistocene and sub-Holocene epochs. So this study aims to outline the vertebrate fossil fauna of this part of the Central Brazil, comprehending Permian and Cretaceous periods, besides Pleistocene Epoch. All bibliographic records about these groups, as well as detailed analysis of the housed materials in some institutional collections spread through Brazil, will improve our knowledge and understanding of the fossil vertebrates occurrences in the Goiás State, 81
II Encontro dos Programas de Pós-Graduação em Geociências, 2008 and identifying main groups represented. It will build a data base, to support future prospection and research. Key words: Fossil Vertebrates, Goiás State, Permian, Cretaceous, Pleistocene Dados acadêmicos: Nível: Mestrado; Título do Projeto: Os Vertebrados Fósseis do Estado de Goiás; Grupo de pesquisa: Núcleo de Evolução e Paleobiologia de Vertebrados; data de entrada na pós-graduação: 19/06/2007; nº de créditos concluídos: 34; data prevista de defesa: 06/08/2009; Possui bolsa: Sim; Agência: CNPq. 82
Change language