Genus: Trigonosaurus CAMPOS, KELLNER, BERTINI & SANTUCCI, 2005
Etymology: Greek, trigonos (triangulo); in allustion to the region nown as 'Triangulo Mineiro" from the Minas Gerais State, where the specimen was collected and Greek, sauros, "lizard."
Species: pricei CAMPOS, KELLNER, BERTINI & SANTUCCI, 2005
Etymology: In honor of Llewellyn Ivor Price, a very important vertebrate paleontologist, whose birthday centenary is celebrated in 2005. L. I. Price collected this and several other specimens and inspired the authors of this paper, some of which had the pleasure to work with him (DAC and RJB).
= Serie B POWELL, 1987
= Titanosaurid indet n. sp B CAMPOS & KELLNER, 1998, 1999
Holotype: MCT 1488-R
Locality: "Caieira" (Locality 120 of Bertini, 1993), an abandoned quarry from Sao Luis Farm, Veadinho Hill, situated about 2 km north of Peiropolis, Municipality of Uberaba, Minas Gerais State, Brazil.
Horizon: Marilia Formation, Bauru Group.
Age: Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material: Incomplete vertebral column formed by 5 cervical vertebrae, 10 dorsals (last cervical and all dorsals articulated), sacrum and ilium.
Paratype: MCT 1719-R: 10 caudals.