COOMBS, 1986

Locality: Section 32(?), Township 31, R21, 150 feet (approximately 46 meters) above the west bank of the Red Deer River, Wheatland County, Alberta Province, Canada.

Horizon: Horseshoe Canyon Formation, Edmonton Group.

Biostratigraphy:

Age: Edmontonian age, lower Maastrichtian Stage, Upper Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

AMNH 5266: 5 vertebral centra, 1 neural arch, 1 dorsal and 2 sacral ribs, right ischium, a complete right hindlimb and pes, an almost complete left pes, and miscellaneous fragments of a juvenile.

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FIORILLO, 1989

Locality: Careless Creek Quarry, Wheatland County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

Number: Not given:

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GILMORE, 1917

Locality: On the Milk River, near the type of Brachyceratops montanus, N. E. 1/4, Sec. 16, T37N, R8W, Milk River, Blackfeet Indian Reservation, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.

Material:

USNM 7943: Dermal plates.

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cf. Euoplocephalus HERNANDEZ-RIVERA, 1997

Locality: Near the village of La Bocana, Baja California State, Mexico.

Horizon: “EL Gallo Formation”, Middle one-third of the Upper Campanian.

Biostratigraphy:

Age: Campanian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

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LANGSTON, STANDHARDT & STEVENS, 1988

Locality: Big Bend National Park, Brewster County, Texas.

Horizon: Upper Aguja Formation.

Biostratigraphy:

Age: Edmontonian age, Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

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?Euoplocephalus LUCAS, MATEER, HUNT & O’NEILL, 1987

Locality: San Juan Basin, New Mexico.

Horizon: Naashoibito Member, Latest Kirtland Formation.

Biostratigraphy:

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

Material:

USNM 8360: Right humerus.

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