Species: schlessmani BAKKER, 1988
Etymology: In honor of the Schlessman Family Foundation, who have supported generously the work on dinosaur in the Denver Museum of Natural History.
= Denversarus schlessmani HUNT & LUCAS, 1992 (sic)
= Edmontonia sp CARPENTER & BREITHAUPT, 1986

Holotype: DMNH 468

Locality: Near southwest corner of sec. 25, T20N, R21E, Carson County, South Dakota.

Horizon: Lower Hell Creek Formation.

Biostratigraphy:

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

Material: Crushed skull.

Referred material:

Number: Not given: Dermal scutes and ossicales.

USNM 5793: Cervical spine.

 

= Edmontonia rugosidens (GILMORE, 1930) COOMBS, 1971, CARPENTER, 1990

Locality: East bank of Tornillo Creek, Chisos Mountains, Big Bend National PArk, Brewster County, Texas.

Horizon: Aguja Formation.

Biostratigraphy:

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

Material:

AMNH 3076: Skull lacking lower jaws.

 

STEIN, 2021

Locality: Tooth Draw Deposit, Butte County, South Dakota.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

TD-17-053: Laeral spike.

TD-12-114,m TD-10-093: Dorsal scutes.

TD-12-211: Posterior (?) scute.

TD-16-140: Tooth.