Genus: Brimosaurus LEIDY, 1854 (nomen dubium)
Etymology: Greek, brime, “strength” and Greek, sauros, “lizard”: Strong lizard.

Species: grandis LEIDY, 1854
Etymology: Latin, grandis, "large."
= Cimoliasaurus grandis (LEIDY, 1854) COPE, 1869
= Discosaurus grandis (LEIDY, 1854) LEIDY, 1870 (nomen dubium)

Holotype:

Locality: Greenvile, Clark County, Arkansas.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: 4 vertebrae.

After Leidy, 1854.

Referred material:

WELLES, 1943

Locality: Hempstead County, Arkansas.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Berlin: Vertebrae.

Berlin: Vertebrae.