Genus: Hanssuesia SULLIVAN, 2003
Etymology: In honor of Hans-Deiter Sues for his many contributions on dinosaurs, and in particular, for his work on pachycephalosaurs.
= Hanssuessia SULLIVAN, 2003 (sic)

Species: sternbergi (BROWN & SCHLAIKER, 1943) SULLIVAN, 2003
= Troodon sternbergi BROWN & SCHLAIKJER, 1943
Etymology: In honor of Charles M. Sternberg, who found the specimen.
= Stegoceras sternbergi (BROWN & SCHLAIKJER, 1943) STERNBERG, 1945

Holotype: NMC No. 8817

Locality: Dinosaur Provinical Park, southeast of Steveville, Newell County, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material: A nearly complete frontoparietal.

Paratype: NMC No. 192

Locality: Dinosaur Provincial Park, below the mouth of Berry Creek, Red Deer River, Newell County, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material: A frontoparietal area lacking the posterior margin.

Referred material:

CMNH 1953, 2379, 2379, 8945, RTMP 79.14.853, 87.36.363, 89.69.21, 2000.26.01, UALVP-3:

Cf. H. sternbergi

CM 1075, 8944, MOR 453, MOR 480, RTMP 85.36.240, 98.93.125, UALVP-8502:

 

 

Locality: Sand Creek, Newell County, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

NMC 2379: Frontoparietal area of a young adult.