No current usage.
(†Timber Belt beds (TX) are same as Wilcox, part of Claiborne, and Jackson groups. See Wilcox, Claiborne, and Jackson.)
Also called †Sabine River beds.
early Tertiary (Eocene)
Named from the great timber region of eastern TX (Penrose, 1890).
Gulf Coast basin
East Texas 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 ([ ]).