No current usage.
(Rocks of †/Waldrip Limestone Member of Waldrip Formation (TX) reallocated to Harpersville Formation of Cisco Group. See Harpersville.)
Pennsylvanian, Late
Not designated (Plummer, 1919).
Bend arch
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 ([ ]).