Genus: Triceratops MARSH, 1889

Species: horridus (MARSH, 1889) MARSH, 1889

Referred material:

ARMITAGE & ANDERSON, 2013

Locality: Private Ranch, E 1/2 of the SW 1/4 fo the NE 1/4 Section 14, T. 15 N., R. 56 E., Glendive, Dawson County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian Age, Late Maastrichtian Age, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.

Material:

HTCH-00: An intact supraorbital horn with soft sheets of fibrillar bone.

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Sp

HAPP & MORROW, 1997, HAPP & MORROW, 2000, HAP, 2010

Locality: Near Jordan, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

SUP9713: Skull and fragmentary skeleton of a juvenile.
Note: Skin impressions and teeth marks from crocodilians and small theropods.
Note: HAPP & MORROW, 2000, state that there is soft tissue impressions in the skull.