Genus: Brachychampsa GILMORE, 1911
Etymology: Greek, brachys, "short" and Greek, champsa, "crocodile."

Species: montana GILMORE, 1911
Etymology: In reference to Montana, where the specimen was discovered.

Referred material:

 

DYER & EVANS, 2026

Locality: South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

ROM 68491: Skull.

Note: With tooth pathologies.