Offshore zone +1, Sulphur Springs Quadrangle, south of Rising Fawn (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 (458.4 - 449.5 Ma)

• no information given

Environment/lithology: offshore; gray limestone and gray, argillaceous limestone

• gray to dark gray to bluish-gray limestone, fine- to coarse-grained, thinly to massivley bedded; argillaceous limestone, gray to brown.

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 32618: authorized by Steven Holland, entered by Tori Hanson on 10.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Florideophyceae
  -
"Tetradium fibratum" = Prismostylus fibratum
"Tetradium fibratum" = Prismostylus fibratum Safford 1856
Safford
Stromatoporoidea
 Labechiida - Stromatoceriidae
Stromatocerium sp., Stromatocerium pustolosum, Stromatocerium rugosum
Stromatocerium sp. Hall 1847 stromatoporoid sponge
Stromatocerium pustolosum stromatoporoid sponge
Safford
Stromatocerium rugosum Hall 1847 stromatoporoid sponge
Hall
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma sp.
Streptelasma sp. Hall 1847 horn coral
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia sp.
Leperditia sp. Rouault 1851 ostracod
Gastropoda
 Murchisoniina - Lophospiridae
Lophospira sp.
Lophospira sp. Whitfield 1886 snail
 Murchisoniina - Hormotomidae
Hormotoma gracilis
Hormotoma gracilis Hall 1847 snail
(Hall)
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp.
Orthoceras sp. Breynius 1832
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina trentonensis
Rafinesquina trentonensis Hall 1847
Conrad
Rhynchonellata
 Orthida - Draboviidae
Fascifera subcarinata
Fascifera subcarinata Ulrich and Cooper 1942
Ulrich & Cooper
 Orthida - Archaeorthidae
? Archaeorthis sp.
? Archaeorthis sp. Schuchert and Cooper 1931
 Orthida - Plectorthidae
"Hebertella borealis" = Mimella borealis, Hebertella sp.
"Hebertella borealis" = Mimella borealis Billings 1859
(Billings)
Hebertella sp. Hall and Clarke 1892
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema sp., Rhynchotrema increbescens, "Rhynchotrema argenturbiem" = Hypsiptycha argenturbicum
Rhynchotrema sp. Hall 1860
Rhynchotrema increbescens Hall 1847
(Hall)
"Rhynchotrema argenturbiem" = Hypsiptycha argenturbicum White 1874
(White)
 Atrypida - Anazygidae
Zygospira modesta
Zygospira modesta Hall 1847
Say
Stenolaemata
 Trepostomida - Monticuliporidae
Homotrypa sp., Homotrypa subramosa
Homotrypa sp. Ulrich 1882
Homotrypa subramosa Ulrich 1886
Ulrich
 Trepostomata - Trematoporidae
Batostoma minnesotense, Batostoma implicatum
Batostoma implicatum Nicholson 1881
Nicholson
 Trepostomata - Aisenvergiidae
Eridotrypa sp.
Eridotrypa sp. Ulrich 1893
 Cryptostomata - Rhinidictyidae
Rhinidictya sp., Rhinidictya mutabilis, Pachydictya sp.
Rhinidictya sp. Ulrich 1882
Rhinidictya mutabilis Ulrich 1882
Ulrich
Pachydictya sp. Ulrich 1882