Offshore zone -5, Kensington Quadrangle, Mill Creek (Ordovician of the United States)

Where: Walker County, Georgia (34.8° N, 85.4° W: paleocoordinates 29.2° S, 66.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Caradoc (460.9 - 449.5 Ma)

• no information given

Environment/lithology: offshore; gray limestone

• Thin to massive beds of gray, bluish-gray, and dark gray limestone; fine- to coarse-grained , sometimes with argillaceous partings. Thin shale partings and dark gray to black calcilutite partings may also be present.

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 32873: authorized by Steven Holland, entered by Tori Hanson on 16.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Isotelus sp. Dekay 1824 trilobite
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia sp. Rouault 1851 ostracod
Strophomenata
 Strophomenida - Strophomenidae
Strophomena sp. Rafinesque and De Blainville 1824
Strophomena planumbona Hall 1847
(Hall)
Rhynchonellata
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Hall
 Orthida - Draboviidae
Pionodema sp. Foerste 1912
 Orthida - Glyptorthidae
Glyptorthis cf. bellarugosa Conrad 1843
(Conrad)
Stenolaemata
 Cryptostomida -
Rhinidictya mutabilis Ulrich 1882
Ulrich
Stromatoporoidea
 Labechiida - Aulaceratidae
Cryptophragmus antiquatus Raymond 1914
(Raymond)
Anthozoa
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
Tetradium
  -
Rhodophyceae
  - Solenoporaceae