USGS 7096 - Red Bluff (Flint River Fm) (Oligocene of the United States)

Also known as Station 7096

Where: Decatur County, Georgia (30.9° N, 84.6° W: paleocoordinates 31.0° N, 78.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Flint River Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• From lower bed. Assigned to Lower Oligocene (Rupelinan) by Scott et al. 2001 following mapping by Cooke (1945).

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, cherty/siliceous limestone

• Shallow-water carbonate environment.
• Limestone.

Size class: macrofossils

Preservation: cast, mold/impression, replaced with silica

Reposited in the USNM

Collection methods: quarrying,

• Collected by Cooke and Mansfield (1914). Reposted in USNM collections.

Primary reference: W. H. Dall. 1916. A contribution to the invertebrate fauna of the Oligocene beds of Flint, River. Proceedings of the United States National Museum 51(2162):487-524 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60838: authorized by Austin Hendy, entered by Austin Hendy on 24.05.2006, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca; from fairly poorly preserved assemblage; many identifications and types based on casts and molds.
Bivalvia
 Arcida - Glycymerididae
 Pectinida - Pectinoidae
"Pecten (Chlamys) anatipes" = Anatipopecten anatipes
"Pecten (Chlamys) anatipes" = Anatipopecten anatipes Morton 1833 scallop
 Mytilida - Mytilidae
Arcoperna inflata Dall 1916 mussel
 Carditida - Crassatellidae
 Cardiida - Veneridae
"Chione bainbridgensis" = Chione (Chionopsis) bainbridgensis, "Antigona aff. caesarina" = Periglypta caesarina, "Macrocallista (Chionella) sp." = Pitar (Chionella), Pitaria (Lamelliconcha) silicifluvia, Pitaria (Lamelliconcha) calcanea
"Chione bainbridgensis" = Chione (Chionopsis) bainbridgensis Dall 1916 venus clam
"Antigona aff. caesarina" = Periglypta caesarina Dall 1903 venus clam
"Macrocallista (Chionella) sp." = Pitar (Chionella) Cossmann 1886 venus clam
Pitaria (Lamelliconcha) calcanea Dall 1903 venus clam
 Cardiida - Cardiidae
"Cardium (Laevicardium) sp." = Laevicardium
"Cardium (Laevicardium) sp." = Laevicardium Swainson 1840 cockle
 Lucinida - Lucinidae
Phacoides sp., "Phacoides (Miltha) ocalanus" = Pseudomiltha ocalanus
Phacoides sp. Blainville 1825 clam
"Phacoides (Miltha) ocalanus" = Pseudomiltha ocalanus Dall 1903 clam
Gastropoda
 Architaenioglossa - Ampullinidae
 Neogastropoda - Fasciolariidae
Fusinus nexilis Dall 1890 snail
 Neogastropoda - Volutidae
Lyria mansfieldi Dall 1916 volute
 Neogastropoda - Muricidae
"Murex rufirupicolus" = Pterynotus (Pterynotus) rufirupicolus
"Murex rufirupicolus" = Pterynotus (Pterynotus) rufirupicolus Dall 1916 mustached bat
 Neogastropoda - Conidae
Conus demiurgus, "Conus tortilis" = Conus sauridens
Conus demiurgus Dall 1903 cone shell
"Conus tortilis" = Conus sauridens Conrad 1833 cone shell
 Stromboidea - Strombidae
Strombus sp. Linnaeus 1758 conch
 Calyptraeoidea - Calyptraeidae
Calyptraea (Trochita) aperta2 Solander 1766 slipper shell
 Sorbeoconcha - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Sorbeoconcha - Cerithiidae
Acroperna
  -
Acroperna inflata1 Dall 1916