Rio Piranhas Formation
Introduction The '''Rio Piranhas Formation''' is a Berriasian to Hauterivian geologic formation in Paraíba, Brazil. Fossil ornithopod tracks have been reported from the formation. Also fossils of ''Triunfosaurus leonardii'' have been found in the formation.
See also * List of dinosaur-bearing rock formations** List of stratigraphic units with ornithischian tracks*** Ornithopod tracks
References === Bibliography ===*
Further reading *  I. S. Carvalho, L. Salgado, R. M. Lindoso, H. I. Araújo-Júnior, F. C. Costa Nogueira and J. A. Soares. 2017.A new basal titanosaur (Dinosauria, Sauropoda) from the Lower Cretaceous of Brazil. Journal of South American Earth Sciences 75:74-84*  ANP - Brazil Round 9 - Rio do Peixe Basin