ELZANOWSKI & BRETT-SURMAN, 1995

Locality: Bug Creek West, west half of sec. 9, T22N, R43E, Western McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 117599: Distal end of right metatarsus.