Lingle Limestone (IL*,MO)
Lingle Formation (IL)
Howardton Limestone Member (IL), Tripp Limestone Member (IL), Misenheimer Shale Member (IL), and Walnut Grove Limestone Member (IL)
late Middle Devonian (Givetian)*
Along branch of Lingle Creek, in SW/4 sec. 26, T. 13 S., R. 2 W., Union Co., IL (Savage, 1920).
Illinois 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 ([ ]).