Offshore zone -9, Hooker Quadrangle, east of U.S. Highway 11 (Ordovician of the United States)

Where: Dade County, Georgia (34.7° N, 85.5° W: paleocoordinates 29.2° S, 66.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Caradoc (460.9 - 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 33179: authorized by Steven Holland, entered by Tori Hanson on 23.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Stauriidae
Favistella sp. Dana 1846 horn coral
Cephalopoda
 Orthocerida - Orthoceratidae
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina cf. deltoidea Conrad 1838
(Conrad)
 Strophomenida - Strophomenidae
Strophomena incurvata, "Strophomena tennesseensis" = Rhipidomena tennesseensis
Strophomena incurvata Shephard 1838
(Shepard)
"Strophomena tennesseensis" = Rhipidomena tennesseensis Willard 1928
Willard
Rhynchonellata
 Atrypida - Anazygidae
Zygospira sp. Hall 1862