Sp.

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

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UCMP 49931: Right dentary lacking the anterior end and bearing 4 complete teeth.

UCMP 49932: Anterior half of right dentary with 1 tooth.

UCMP 49934: Posterior part of right dentary with 6 complete teeth.

UCMP 47766: Fragment of left dentary.

UCMP 45938: Left dentary lacking anterior tip with 3 complete teeth.

Locality: UCMP 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:

Number: Not given: A single unnumbered specimen.

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ARMSTRONG-ZIEGLER, 1978

Locality: MNA site A (= MNA 107), Hogback South, 7 1/2 quadrangle, T26N, R16W, 108'29"10W Long. 36'16"10N Lat. 30 miles southwest of Farmington, San Juan County, New Mexico.

Horizon: Fruitland Formation.

Biostratigraphy:

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

Material:

Number: Not given:

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BREITHAUPT, 1982

Locality: 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 15013: Posterior fragment of dentary.

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MILLER, 1996

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

Horizon: Terlingua Local Fauna.

Biostratigraphy:

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

Material:

Number: Not given: