Wilkins Peak Member of Green River Formation (CO*,WY*)
Firehole Bed (WY*).
Tertiary*
Eocene, early*
Eocene, middle*
Wilkins Peak, in T. 18 N., R. 106 W., Sweetwater Co., WY (Bradley, 1959).
Green River basin*
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 ([ ]).