Offshore zone -1, Chickamauga Valley (Ordovician of the United States)

Where: Georgia (34.9° N, 85.3° W: paleocoordinates 29.2° S, 66.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Caradoc (458.4 - 449.5 Ma)

• no information given

Environment/lithology: offshore; blue, argillaceous limestone and yellow lime mudstone

• upper 10 feet: gray-blue limestone with argillaceous material occurring as blebs of green color and as thin partings. lower 15 feet: buff-colored limy mudstone and olive-green argillaceous limestone.

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 32660: authorized by Steven Holland, entered by Tori Hanson on 11.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp.
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Hall
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema increbescens
Gastropoda
 Murchisoniina - Lophospiridae
Lophospira sp.
Lophospira sp. Whitfield 1886 snail
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma sp.
Streptelasma sp. Hall 1847 horn coral