Genus: Pahaspasaurus SCHUMACHER, 2007
Etymology: Paha Sapa, Sioux Indian words meaning Black Hills, and Greek, sauros, ‘lizard’.
= Genus: Nova VONLOH & BELL, 1998, SCHUMACHER & BELL, 1999

Species: haasi SCHUMACHER, 2007
Etymology: In honor of Charles C. Haas, who discovered, collected, and initially prepared and researched the specimen.

Holotype: AMM 98.1.1

Locality: Along Maloney Creek, just south of the Belle Fourche River, roughly 6 miles (8 km) southeast of Fruitdale, T7N, R4E, Butte County, South Dakota.

Horizon: Base of the Greenhorn Limestone.

Note: Basal Orman Lake Member, Greenhorn Formation, Dunveganoceras pondi zone of VonLoh & Bell, 1998.

Biostratigraphy:

Age: Early Late Cenomanian Stage, Upper Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material: Partial skull, portions of left front and rear paddles, poorly preserved vertebral column and rib portions.

Pahaspasaurus haasi after SCHUMACHER, 2007: A) dorsal; B) lateral and C) ventral views.

Pahaspasaurus haasi modified from SCHUMACHER, 2007: A) dorsal and B) lateral views.

Pahaspasaurus haasi after SCHUMACHER, 2007.

Referred material?

SDSM 35007: 16 vertebrae, femur and some miscellaneous bone fragments.