Offshore zone -13, Ringgold Quadrangle, Chickamauga Creek (Ordovician to of the United States)

Where: Catoosa County, Georgia (34.9° N, 85.1° W: paleocoordinates 29.4° S, 67.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Ordovician to Middle Ordovician (470.0 - 443.4 Ma)

• no information given

Environment/lithology: offshore; gray limestone and brown shale

• Light gray, fine-grained massively bedded limestone, somtimes dolomitic. Limestone mottled in shades of blue-gray, green, purple, pink, and yellow. Reddish-brown fissile shales. Red, yellow, and brown mottled sandy silts and silty clays. Light yellow, silty 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 33332: authorized by Steven Holland, entered by Tori Hanson on 27.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Anthozoa
 Lichenariida - Lichenariidae
Lichenaria sp. Winchell and Schuchert 1895 tabulate coral
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
Gastropoda
 Murchisoniina - Hormotomidae
Hormotoma sp. Salter 1859 snail
 Murchisoniina - Lophospiridae
Lophospira sp. Whitfield 1886 snail
 Euomphalina - Raphistomatidae
Raphistoma sp. Hall 1847 snail
 Euomphalina - Ophiletidae
Lecanospira sp. Butts 1926 snail
 Euomphalina - Macluritidae
Maclurites sp. Le Sueur 1818 snail
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
Rostricellula rostrata Ulrich and Cooper 1942
Ulrich & Cooper
 Orthida - Finkelnburgiidae
Finkelnburgia sp. Walcott 1905
Stenolaemata
 Trepostomata - Halloporidae
"Callopora ? pulchella" = Hallopora
"Callopora ? pulchella" = Hallopora