Description of the stratotype section and proposal of hypostratotype section of the Lower Cretaceous Quiricó formation, São Francisco Basin, Brazil

Abstract The Quiricó Formation presents an abundant and diversified fossil record, and is the only formation from the Cretaceous of the São Francisco basin with the occurrence of ostracodes. This formation was described from the banks of the Quiricó creek, tributary of the Prata river, which is the type locality. However, a stratotype section was not described. The present work presents the description of the stratotype section of the Quiricó Formation and proposal of hypostratotype section, based on the lithologic description and fossiliferous occurrences. The studied sections are located in the Minas Gerais State, Brazil: 1. stratotype section of the Quiricó Formation, by the banks of Quiricó and São José creeks, Presidente Olegário County; 2. hypostratotype section of the Tereza Farm, near the Olhos D’água community, João Pinheiro County.