Abstract
The Alcântara Formation (Cenomanian, São Luís Basin), located on the northeast coast of the country, represents one of the most important geological units of the Upper Cretaceous of Brazil. A wide range of fossil fauna of "fish" and Tetrapoda are commonly found in this region, including Pterosauria, Crocodyliformes and at least two lineages of Dinosauria. Many of the fossil records from t…