No current usage.
(†Croton Gypsum (TX-recognized locally in Stonewall Co.) is synonym of Eskota Gypsum. See Eskota.)
Middle Permian (Guadalupian)
Notable exposures in Stonewall Co., central northern TX. Origin of name not stated by authors (Lloyd and Thompson, 1929).
Permian 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 ([ ]).