†Trigonosaurus Campos et al. 2005 (titanosaurid)
Reptilia - Dinosauria - Titanosauridae
Full reference: D. d. A. Campos, A. W. A. Kellner, R. J. Bertini and R. M. Santucci. 2005. On a titanosaurid (Dinosauria, Sauropoda) vertebral column from the Bauru Group, Late Cretaceous of Brazil. Arquivos do Museu Nacional, Rio de Janeiro 63(3):565-593
Parent taxon: Titanosauridae according to D. d. A. Campos et al. 2005
Sister taxa: Aeolosaurini, Antarctosaurinae, Antarctosaurus, Argyrosaurus, Atacamatitan, Baurutitan, Hypselosaurus, Laplatasaurus, Lognkosauria, Megaloolithidae, Microcoelus, Rinconsauria, Titanosaurinae, Titanosaurus
Subtaxa: Trigonosaurus pricei
Ecology: ground dwelling herbivore