Red Mountain - formation summary (Silurian to of the United States)

Where: Georgia (34.9° N, 85.4° W: paleocoordinates 28.9° S, 57.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Red Mountain Formation, Aeronian to Aeronian (440.8 - 433.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone and lithified shale

• massive conglomeratic sandstones with many crossbreed and ripple marked zones ... lower member of coarse- to medium-grained, buff to red sandstone in both massive and thin layers, a middle member of alternating shales, and silty limestones which for the most part are thinly bedded ... thinly bedded shales, siltstones, and silty limestones

Size class: macrofossils

Preservation: cast

Primary reference: A. T. Allen and J. G. Lester. 1954. Contributions to the Paleontology of Northwest Georgia. Georgia Geological Survey Bulletin 62:1-166 [R. Gastaldo/J. Allen/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 164677: authorized by Steven Holland, entered by Steven Holland on 10.12.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Phacopidae
 Phacopida - Dalmanitidae
 Phacopida - Calymenidae
Calymene sp. Brongniart 1822 trilobite
Calymene platys trilobite
Calymene celebra Raymond 1916 trilobite
 Asaphida - Asaphidae
 Athyridida - Anoplothecidae
 Spiriferida - Cyrtiidae
Eospirifer radiatus Sowerby 1834
 Pentamerida - Pentameridae
Pentamerus oblongus de Sowerby 1839
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Orthida - Rhipidomellidae
 Orthida - Dalmanellidae
"Dalmanella meeki" = Cincinnetina meeki Miller 1875
"Dalmanella multisecta" = Cincinnetina multisecta James 1871
 Orthida - Platystrophiidae
 Murchisoniina - Murchisoniidae
"Hormotoma subulata" = Murchisonia subulata
"Hormotoma subulata" = Murchisonia subulata Conrad 1842 snail
 Trepostomata - Monticuliporidae
Prasopora sp. Nicholson and Etheridge 1877
 Stauriida - Campophyllidae
Campophyllum sp. Milne-Edwards and Haime 1850 horn coral