Uintan age*
A provincial North American land mammal age (NALMA). Between Bridgerian and Duchesnean.
Eocene, middle
Eocene, late
Name based on Uinta Formation of northern UT (Wood and others, 1941).
North America
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).