National Geologic Map Database
General Information
- Title: The Richmond group in Ohio and Indiana and its subdivisions, with a note on the genus Strophomena and its type
- Author(s): Nickles, J.M.
- Publishing Organization: The Geological Publishing Company
- Series and Number: The American Geologist v. 32 [p. 202-218]
- Publication Date: 1903
- Cross Section: None
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Geologic units referred to in Geolex
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.