Species: bogerti ESTES, 1964
Etymology: In honor of C. M. Bogert of the American Museum of Natural History for his work on the latter genus.

Holotype: UCMP 54261

Locality: UCMP V-5815, Hatcher Number 2, western side of a cross-stratified sandstone erosional remnant near the center of a large blowout on the crest of a ridge, the distance form the nearest point on the road, approximately 150 yards south of the quarry, to the Johnson ranch is 0.4 miles, Niobrara County (Formerly Converse County), Eastern Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Almost complete left maxilla.

Referred material:

UCMP 54199: Almost complete premaxilla.

UCMP 54213: Anterior end of left maxilla.

 

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: Fragment of dentary.

 

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 49895: Fragment of right maxilla.

UCMP 49936: Anterior half of left maxilla.

UCMP 49939: Left dentary broken anteriorly and posteriorly.

UCMP 49940: Fragment of left maxilla.

 

BRYANT, 1990

Locality: Eastern Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

UCMP 120245: Tooth.

 

ESTES, BERBERIAN & MESZOELY, 1969

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

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

MCZ 3687: A fragmentary left maxilla, an isolated tooth with adherent jaw fragment and 2 referred vertebrae.

 

GAO & FOX, 1996

Locality: Wounded Knee Locality, Frenchman River Valley, Southwestern Saskatchewan Province, Canada.

Horizon: Frenchman Formation.

Biostratigraphy:

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

Material:

UALVP 29846: Incomplete right dentary.

UALVP 33387: Dorsal vertebra.

 

Locality: KUA-1 locality, Red Deer River Valley near the village of Scollard, Stettler County, central Alberta Province, Canada.

Horizon: Scollard Formation, Uppermost Edmonton Group.

Biostratigraphy:

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

Material:

UALVP 29845, and several unnumbered specimens, tooth-bearing dentaries.

UALVP 33385: Incomplete parietal.

UALVP 33902-22910: Disarticulated cervical and dorsal vertebrae.

 

SAHNI, 1972

Locality: Clambank Hollow, just north of the Judith River on the Missouri River in north-central Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

AMNH 8504: Maxillary fragment.

 

STENERSON & O’CONNER, 1994

Locality: Northwestern South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

Number: Not given: