Sellersburg Limestone (KY*,IN*)
(†Sellersburg Limestone not used by the IN Geol. Survey. Replaced with North Vernon Limestone. See North Vernon.)
Silver Creek and overlying Beechwood Members (KY*,IN*)
Middle Devonian*
Type area: vicinity of Sellersburg, Clark Co., IN.
Cincinnati arch*
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 ([ ]).