BREITHAUPT, 1982

Locality: UW Locality V-79032, east flank of Rock Springs Uplift, Sweetwater County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UW 14112: Miscellaneous carapace fragments.

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ESTES, 1964

Locality: UCMP V-5820, Kent 484, found on the surface near the top of the east side of a small draw on the south side of the prominent hill northeast of the J. Krejci ranch house, Niobrara County (Formerly Converse County), Wyoming.

Locality: UCMP V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, Powder River Basin, Niobrara County, Wyoming.

Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek, Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.

Locality: UCMP V-5711, Bushy Tailed Blowout, Quarry area includes the floor of a small blowout approximately 10 yards northwest of the highest point on the ridge forming the northeastern side of the blowouts of loc. V-5003, S 1/2, Sec. 20, T37N, R64W, Lance Creek, Powder River Basin, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Numbers: Not given: Shell fragments.

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GILMORE, 1919

Locality: 3 1/2 miles south of west of Kimbeto, near the south side of sec. 4, T 22N, R 10W, San Juan County, New Mexico.

Horizon: Kirtland Formation.

Biostratigraphy:

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

Locality:

USNM 8614, 8623: Anterior portions of plastra.

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LANGSTON, STANDHARDT & STEVENS, 1989

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

Horizon: Lower Aguja Formation.

Biostratigraphy:

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

Material:

Number: Not given:

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WOLBERG, HALL, BELLIS, CHAVEZ, ANDERSON, MORO & GIL, 1988

Locality: Secs, 14, 15, 23, and 24, T23N, R12W, north of Chaco Canyon and south of Farmington, San Juan Basin, San Juan County, New Mexico.

Horizon:

Biostratigraphy:

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

Material:

Number: Not given: