Davenport Member of Pinicon Ridge Formation of Wapsipinicon Group (IA)
Davenport Member of Wapsipinicon Limestone (IL,IA)
late Middle Devonian (Givetian)
Not synopsized to date.
Iowa shelf
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 ([ ]).