No current usage.
(Rocks of †Cimarron Stage (KS) reallocated to Leonardian Series. See Leonardian.)
early Permian (Leonardian)
Named from Cimarron River, central southern KS (US geologic names lexicons, USGS Bull. 896, 1200).
Anadarko basin
Sedgwick 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 ([ ]).