Paronychodon lacustris Cope, 1876

Cool Tooth

Remarks

• Collector:    Unknown (collection of Lee Duchouquette)
• Formation:  Montana Group, Hell Creek Formation
• Location:     Eastern Montana

General Info

Synonyms (older names and misidentifications)

• 1876 Paronychodon lacustris Cope
• 1876 Zapsalis abradens Cope
• 1889 Tripriodon caperatus Marsh
• 1935 Deinodontid ? tooth Russell
• 1964 Paronychodon lacustris Cope; Estes
• 1970 Paronychodon lacustris Cope; Estes and Berberian
• 2002 Paronychodon lacustris Cope; Sankey, Brinkman, Guenther & Currie

Stratigraphic Occurrence

• Montana Group, Hell Creek Formation of Eastern Montana
• Montana Group, Lance Formation of Eastern Wyoming
• Montana Group, Fruitland Formation of New Mexico
• Judith River Group, Milk River Formation of Alberta

Age

• Paronychodon lacustris Cope is Maastrichtian in Age (~66-65 mya).

Geographic Occurrence (not an all-inclusive list)

• Alberta, Canada
• McCone County, MT
• Natrona County, WY
• New Mexico (county ?)

Remarks

       For identification and descriptions, see:

• Estes, R.  1964. Fossil Vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming.  University of California Publications in Geological Sciences 49, 1–179.
• Russell, L. S.  1935.  Fauna of the Upper Milk River Beds, Southern Alberta.  Transactions of the Royal Society of Canada, Section 4, 115–127.
• Sankey, J. T.; Brinkman, D. B.; Guenther, M.; Currie, P. J.  2002.  Small Theropod and Bird Teeth from the Late Cretaceous (Late Campanian) Judith River Group, Alberta.  Journal of Paleontology 76 (4), 760–762, fig's 5.23–5.30.