Genus: Mosasaurus CONYBEARE, 1822
Species: missouriensis (HARLAN, 1834) LEIDY, 1858
Referred material:
KONISHI, NEWBREY & CALDWELL, 2014
Locality: Near Willing, Cardston County, southern Alberta Province, Canada.
Horizon: Bearpaw Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
RTMP 2008.036.0001, 2003.400.0001: Skull and nearly complete skeleton. Note with stomach contents (Aulopiformes (RTMP 2008.036.0006), Lamniformes (RTMP 2008.36.0003), Squalicorax sp (RTMP 2008.036.005)).