U. S. Highway 27, just north of Chickamauga Creek (Ordovician of the United States)
Where: Catoosa County, Georgia (34.9° N, 85.1° W: paleocoordinates 29.3° S, 66.0° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Ridley Formation, Blackriveran (457.3 - 449.6 Ma)
• formation-level stratigraphic resolution
Environment/lithology: offshore; argillaceous limestone and siltstone
• dark cherty limestone containing an abundance of fossils, often beautifully silicified.
Size class: macrofossils
Reposited in the USNM
Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 164469: authorized by Pete Wagner, entered by Pete Wagner on 02.12.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Rhynchonellata | |
Glyptorthis multicostellata n. sp.
Glyptorthis multicostellata n. sp. Cooper 1956 | |