Genus: Bugenasaura GALTON, 1995
Etymology: Latin prefix, bu, "large"; Latin, gena, Feminine, Cheek; saura Greek, feminine form, "lizard"; an allusion to the massive ridges on the maxilla and dentary for the attachment of a structure functionally analogous to the cheeks of mammals.

Species: infernalis GALTON, 1995
Etymology: Latin, infernalis, "belonging to the lower regions," an allusion to the occurrence in the Hell Creek Formation.

Holotype: SDSM 7210

Locality: Olson Locality, SDSM number V729, Harding County, South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: Left half of cranium, left dentary and fragment of right dentary, centra of 2 dorsal vertebrae, 2 dorsal vertebrae lacking transverse process and neural spines and 2 manual phalanges.

Referred material:

GALTON, 1997

Locality: Lusk, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

YPM 8098: Right dentary tooth.

 


FISHER, RUSSELL, STOSKOPF, BARRICK, HAMMER & KUZMITZ, 2000

Locality: Harding County, Northwestern South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

NCSM 15728: Skull and nearly complete skeleton.
Note: With heart impression?
Note: Peter Galton believes this specimen to be a Bugenasaura and not a new species of Thescelosaurus.

 

= Thescelosaurus? garbanii MORRIS, 1976
Etymology: In honor of Mr. Harley Garbani, the discover of the specimen.

Holotype: LACM 33542

Locality: LACM V 3152, T21N, R42E, NE /2, NW /4, Sec. 22, Garfield County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material: 5 posterior cervical and 11 anterior dorsal vertebrae, left pes, tarsus, tibia, fibula, and distal part of femur.

Referred material:

TRIEBOLD, 1997

Locality: Sandy Site, Harding County, 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: