ON MANIRAPTORAN MATERIAL (DINOSAURIA: THEROPODA) FROM VALE DO RIO DO PEIXE FORMATION, BAURU GROUP, BRAZIL

Non avian theropod remains are scarce in Brazil and few specimens were referred to Maniraptora. Remains of a non-avian theropod dinosaur (DGM 930-R) from Vale do Rio do Peixe Formation, Bauru Group, found near the Santo Anastacio municipality, Sao Paulo State are described. DGM 930-R is represented by two partial caudal vertebra centra, a partial diaphysis of the right femur with marked lines of arrested development (indicatives of a habitat with marked seasonality), a partial dorsal rib and other rib fragments, a partial bone that possibly represents the proximal portion of the ischium, and some unidentifiable elements. DGM 930-R is referred as a Maniraptoran incertae sedis, possibly related to Deinonychosauria because of the box-like anterior vertebral centrum with quadrangular-shaped posterior articulation. The circumference of the femur of DGM 930-R suggests it was a medium-sized dinosaur (about 3 m long) that shared the same geographic space with other theropods (megaraptorans, abelisauroids, and carcharodontosaurids) and mesoeucrocodylians.