Classificação sistemática de bivalves fósseis do Cretáceo superior da bacia Bauru: Formação Presidente Prudente, da região de Presidente Prudente, SP

Abstract

The Bauru Basin covers an area of approximately 370,000 km², being present in four Brazilian states Minas Gerais, Paraná, Mato Grosso do Sul and Goiás, and a large part of this area (about 42%) corresponds to the state of São Paulo. In relation to rocks of Cretaceous age the Bauru Basin has the most extensive sedimentary succession of South America, especially considering the continental sedimentary context. The phylum Mollusca represents the second largest group of the animal kingdom in terms of current and fossil diversity, to which belongs the class of Bivalves, which includes animals such as oysters, mussels and scallops. Continental sedimentary environments of the Cretaceous period reveal rock outcrops containing bivalve molluscs, but it is worth noting that the group in question is little studied and needs more research for a better understanding of its taxonomy, ecology and diversity. The present work presents the systematic classification of fossil bivalves collected in the region of Presidente Prudente, SP, in outcropping of the Presidente Prudente Formation(Bauru Basin, Upper Cretaceous). Based on the information collected, laboratory analyzes, research techniques and bibliographic studies, it was possible to identify three distinct taxonomic species, being Taxodontites paulistanensis; Diplodon arrudai; Anodontites pricei.