Species: libratus LAMBE, 1914
Etymology:
Holotype: CMN 2120
Locality: 3 1/2 miles below the mouth of Berry Creek, on the south side of the Red Deer River, near prairie level, Dinosaur Provincial Park, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Almost complete skull and lower jaws, skeleton lacking cervicals
and some dorsal vertebrae.
Note: A furcula was found but BYRANT & RUSSELL Disagree.
Referred material:
MAKOVICKY & CURRIE, 1998
Locality: Dinosaur Provincial Park, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Material:
RTMP 91.36.500: Fragmentary skeletons with furculae.
(TANKE & CURRIE, (1998) 2000)
RTMP 94.12.602: Fragmentary skeletons with furculae.