Genus: Oohkotokia PENKALKSI, 2014
Etymology: From the Blackfoot animate noun ooh'kotoka, meaning large stone or rock, pluse Latin -ia, indicating made of or derived from, literally " Child of stone," an allusion to the all-encompassing armour. The generic name honours the Blackfeet people, on whose land the specimen was found.

Species: horneri PENKALKSI, 2014
Etymology: In honor of John R. Horner for his work on dinosaurs from Montana.

Holotype: MOR 433

Locality: MOR Locality TM-034, northwest of Cut Bank, Montana.

Horizon: Upper Two Medicine Formation.

Biostratigraphy:

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

Material: A skull and fragmentary skeleton from Group 1 area of quarry.

Oohkotokia horneri (modified from PENKALKSI, 2014), Holotype: MOR 433.

Referred material:

MOR 363: A fragmentary skull from 60 m below the top of the Upper Two Medicine Formation.

NSM PV 20387: Partial skull, vertebrae, a partial pelvis, forelimb and hindlimb elements without feet, and one keeled osteoderm.

FPDMV-35: Undescribed specimen.

RTMP 2001.42.19:

USNM 7943:

 

= Dyoplosaurus sp GILMORE, 1930

Locality: South side of Milk River, NW 1/4, Sec. 27, T37N, R8W, on the Blackfeet Indian Reservation, Glacier County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

USNM 11892: Top of skull and teeth.