Floresta dos Borbas, a new locality with dinosaur tracks in the Sousa Basin, Paraíba, Brazil

Abstract

A new site with dinosaur tracks from the Sousa Basin, Lower Cretaceous of Northeast Brazil is presented. Floresta dos Borbas is the sixth dinosaur tracksite found in the Antenor Navarro Formation. Two theropod trackways are described as well as three sauropod tracks. The sauropod record in this region indicates a restriction to the northern portion of the basin, mostly found in the Antenor Navarro Formation and probably the basal portion of the Sousa Formation. A preliminary analysis indicates that the lower portion of the stratigraphic sequence that forms the Sousa Basin was deposited in a different paleoenvironmental condition than the upper part, being possibly more favorable for sauropods.