Species: lafquenianum GASPARINI & GONI, 1985
Etymology:

Holotype: Museo de La Plata M.L.P. 71/11/12/1

Locality: Cantera de la Compania Bentonitas Patagonicas, SE Lago Pellegrini, Northeast Rio Negro Province, Northern Patagonia, Argentina.

Horizon: Middle member, Allen Formation, Lower Malargue Group.

Biostratigraphy:

Age: Allenian Tetrapoda Assemblage, Late Campanian-Early Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: 6 cervicals, 1 pectoral, 4 dorsals, 1 sacral, and 14 caudal vertebrae, humerus, left femur, left ilium, and 1 epipodial.

Referred material:

= Trinacromerium lafquenianum GASPARINI & SALGADO, 1999 (referred material)

Locality: Lago Pellegrini, 67°44’W, 38°33’S, northwestern Rio Negro Province, Argentina.

Horizon: Middle Member, Allen Formation, Lower Malargue Group.

Biostratigraphy:

Age: Allenian Tetrapoda Assemblage, Late Campanian-Early Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MCS-4, MUCPv-92, MLP 71-II-13-1: Fragmentary remains.