No current usage.
(†Osage Limestone (MO) is same as Gasconade Dolomite and †Van Buren Formation [later abandoned, = lower Gasconade]. See Gasconade.
Early Ordovician (Ibexian)
Named from Osage Bluff, Cole Co., central MO (US geologic names lexicons, USGS Bull. 896, 1200).
Ozark uplift
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 ([ ]).