BOYD, DRUMHELLER & GATES, 2013
Locatliy: UMNH Localty 303, Grandstaircase-Escalante National Monument, Utah.
Horizon: Kaiparowits Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
UMNH VP 21104, 21107: Fragmentary skeletons of a juvenile specimens.
Note: Has tooth marks from crocodiliformes.
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