Genus: Opeosaurus MEYER, 1857-1855
Etymology: Greek, ope, "opening" and Greek, sauros, "lizard."

Species: suevicus MEYER, 1857-1855
Etymology: In reference to Suevi, an old Germanic race.

Holotype: SMNS 4141

Locality: Ludwingsburg, Baden-Wurttemberg State, Germany.

Horizon: Stuttgart-Zuffenhausen, Upper Muschelkalk.

Biostratigraphy: mo2.

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Middle Triassic.

Material: Fragmentary lower jaw.