Cowboy Spring Formation (NM*)
late Early to early Late Cretaceous (Albian to Cenomanian)*
In secs. 13 and 24, T. 31 S., R. 18 W., and in secs. 18 and 19, T. 31 S., R. 17 W., Hidalgo Co., NM (Zeller, 1975).
Pedregosa 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 ([ ]).