Offshore zone -9, Cedar Grove Quadrangle, West Chickamauga Creek (Ordovician of the United States)
Where: Catoosa County, Georgia (35.0° N, 85.2° W: paleocoordinates 29.2° S, 65.9° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Caradoc (458.4 - 449.5 Ma)
• no information given
Environment/lithology: offshore; gray limestone
• Massive, gray to blue-gray, crystalline, limestone in which brownish-black ropy chert nodules and calcite "eyes" may occur. Some argillaceous material may be presen, as well as calcilutute with dark, silty, dolomitic layers.
Size class: macrofossils
Primary reference: A. T. Allen and J. G. Lester. 1957. Zonation of the Middle and Upper Ordovician strata in northwestern Georgia. Georgia State Division of Conservation, the Geological Survey Bulletin 66:1-104 [S. Holland/T. Hanson/T. Hanson]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 33175: authorized by Steven Holland, entered by Tori Hanson on 23.07.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Cephalopoda | |
| Rhynchonellata | |
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Zygospira sp. Hall 1862 | |
| Strophomenata | |
|
| |
"Strophomena tennesseensis" = Rhipidomena tennesseensis, Strophomena incurvata
| |
| Anthozoa | |
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Favistella sp. Dana 1846 horn coral | |