USGS 7074 - Hale Landing (Flint River Fm) (Oligocene of the United States)

Also known as Station 7074

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 upper bed. Assigned to Lower Oligocene (Rupelian) by Scott et al. 2001 following mapping by Cooke (1945).

• group of beds-level stratigraphic resolution

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

• Shallow-water carbonate environment.
• In coralliferous chert.

Size class: macrofossils

Preservation: cast, mold/impression, replaced with silica

Reposited in the USNM

Collection methods: quarrying,

• Collected by Vaughan, 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 60831: authorized by Austin Hendy, entered by Austin Hendy on 24.05.2006

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.
Gastropoda
 Epitonioidea - Epitoniidae
? Epitonium dubiosum Dall 1916 wentletrap
 Cerithioidea - Turritellidae
Turritella tampae Heilprin 1887 turret shell
Turritella halensis Dall 1916 turret shell
 Cerithioidea - Cerithiidae
Cerithium halense cerith snail
Cerithium vaughani cerith snail
 Sorbeoconcha - Cerithiopsidae
Cerithiopsis diagona Dall 1916 snail
 Sorbeoconcha - Naticidae
 Sorbeoconcha - Tornidae
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus vaughani Dall 1916 cone shell
 Neogastropoda - Turridae
Turris sp. Röding 1798 turrid
 Neogastropoda - Marginellidae
Marginella silicifluvia Dall 1916 margin shell
Marginella halensis Dall 1916 margin shell
 Neogastropoda - Volutidae
Lyria aff. silicata Dall 1915 volute
 Sorbeoconcha - Ranellidae
Cymatium cecilianum Dall 1916 triton shell
 Sorbeoconcha - Cassidae
Cassis sulcifera Sowerby 1850 snail
 Sorbeoconcha - Thersiteidae
Orthaulax hernandoensis Mansfield 1937 snail
 Sorbeoconcha - Strombidae
"Strombus chipolanus" = Persististrombus chipolanus
"Strombus chipolanus" = Persististrombus chipolanus Dall 1890 true conch
 Trochoidea - Turbinidae
 Trochoidea - Liotiidae
Bivalvia
 Cardiida - Veneridae
"Chione bainbridgensis" = Chione (Chionopsis) bainbridgensis, "Antigona aff. caesarina" = Periglypta caesarina
"Chione bainbridgensis" = Chione (Chionopsis) bainbridgensis Dall 1916 venus clam
"Antigona aff. caesarina" = Periglypta caesarina Dall 1903 venus clam
 Pectinida - Limidae
Lima halensis Dall 1916 file clam
 Ostreida - Ostreidae
"Ostrea vicksburgensis" = Lopha (Lopha) vicksburgensis
"Ostrea vicksburgensis" = Lopha (Lopha) vicksburgensis Conrad 1848 oyster
 Mytilida - Mytilidae