Shark teeth from Pirabas Formation (Lower Miocene), northeastern Amazonia, Brazil
The shark fauna (Chondrichthyes: Elasmobranchii) of Pirabas Formation is one of Ansell Downlights (Fire Rated) the most representative and diversified of the Neogene of South America.This fauna is associated with the early Miocene transgression resulting from the global sea level rise.In this paper, the composition of the Pirabas Cartoon Art shark