USGS Loc. 7148 - Gastopod Gulch [Oak Grove Sand] (Miocene of the United States)

Where: Decatur County, Georgia (30.9° N, 84.6° W: paleocoordinates 31.3° N, 80.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Oak Grove Formation (Alum Bluff Group), Burdigalian (20.4 - 16.0 Ma)

• LITHOSTRATIGRAPHY: From the Oak Grove Fm of the Alum Bluff Gp, for which lithostratigraphic relationships are not discussed. AGE: late Early Miocene, on the basis of macro fossil biostratigraphy. STRATIGRAPHIC RELATIONS: From unknown position within formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, gray, green, calcareous sandstone

• grey-green sand, for the most part unconsolidated, in places highly calcareous

Size class: macrofossils

Reposited in the USGS

Primary reference: J. R. Gardner. 1947. The Molluscan Fauna of the Alum Bluff Group of Florida. United States Geological Survey Professional Paper (142A-H)1-709 [A. Miller/K. Layou/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42212: authorized by Arnold Miller, entered by Karen Layou on 26.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Arcidae
"Arca santarosana" = Anadara (Diluvarca) santarosana
"Arca santarosana" = Anadara (Diluvarca) santarosana Dall 1898 ark
common
 Carditida - Carditidae
"Cardita (Carditamera) apotegea" = Carditamera
"Cardita (Carditamera) apotegea" = Carditamera clam
present; ? in occurrence table
 Cardiida - Tellinidae
Strigilla georgiana n. sp. Gardner 1947 tellin clam
common
 Cardiida - Mactridae
"Spisula (Hemimactra) densa" = Hemimactra
"Spisula (Hemimactra) densa" = Hemimactra clam
common; ? in occurrence table
 Cardiida - Veneridae
"Venus langdoni" = Mercenaria langdoni, "Venus prodroma" = Mercenaria prodroma
"Venus langdoni" = Mercenaria langdoni Dall 1900 quahog
common; ? in occurrence table
"Venus prodroma" = Mercenaria prodroma Gardner 1947 quahog
present; ? in occurrence table
Gastropoda
 Heterostropha - Architectonicidae
"Architectonica quadriseriata" = Architectonica nobilis
"Architectonica quadriseriata" = Architectonica nobilis Röding 1798 sundial
rare
 Neotaenioglossa - Calyptraeidae
Crucibulum multilineatum Conrad 1842 slipper shell
abundant
Crepidula fornicata Linnaeus 1758 slipper shell
rare
Calyptraea centralis Conrad 1841 slipper shell
rare
 Neogastropoda - Cystiscidae
Marginella (Persicula) progravida n. sp. Gardner 1947 snail
rare
 Neogastropoda - Melongenidae
Busycon foerstei n. sp. Gardner 1947 whelk
rare
 Neogastropoda - Nassariidae
"Uzita rabdota n. sp." = Nassarius (Uzita)
"Uzita rabdota n. sp." = Nassarius (Uzita) snail
common
 Neogastropoda - Buccinidae
Hesperisternia bainbridgensis n. sp. true whelk
present
 Sorbeoconcha - Naticidae
"Polinices (Neverita) eucallosus" = Neverita
"Polinices (Neverita) eucallosus" = Neverita moon snail
abundant
 Lepetellida - Fissurellidae
Diodora pumpellyi n. sp. Gardner 1947 snail
rare