Species: latifrons (HAY, 1908) GAFFNEY, 1972
Etymology:
= Eubaena latifrons HAY, 1908

Holotype: AMNH 6139

Locality: Seven Mile Creek, Niobrara County, Wyoming and about 40 miles northwest of Edgemont, Fall County, South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: Fragmentary skull.