Species: kuszmauli SLOAN & VAN VALEN, 1965
Etymology:

Holotype: UMVP 1478

Locality: Bug Creek Anthills, Western McCone County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: Left lower jaw fragment with I and alveoli and P4 and M1.

Referred material:

UMVP 1480: Left premaxilla.

UMVP 1481, 1482, 1483: Maxillae.

UMVP 1477: Left squamosal.

UMVP 1476: Fused parietals.

UMVP 1479, 1485: Lower jaws.

UMVP 1487-1492: Teeth.

LOFGREN, 1995

Locality: UCMP V87152, Lower Tedrow Channel,Tedrow Dinosaur Quarry, Bug Creek anthill, McGuire Creek, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given: 6 teeth.

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Species: cupressus FOX, 1989
Etymology:

Holotype: UALVP 22767

Locality: Medicine Hat Brick and Tile Quarry, 3 km NW Ravenscrag, Saskatchewan, Canada.

Horizon: Lower Ravenscrag Formation.

Biostratigraphy:

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

Material: Left LP4.

Referred material:

UALVP 22764, 22765, 22766, 27768: LP4.

UALVP 22770: LM1.

UALVP 22771, 22772: UP4.

UALVP 22774, 22775: UM1.

UALVP 22776: UM2.