USGS Loc. 7339, 11110, 12303 - Suwannee Sulphur Springs [Suwannee Lmst] (Oligocene of the United States)

Where: Hamilton County, Florida (30.4° N, 83.2° W: paleocoordinates 30.4° N, 76.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Suwannee Limestone Formation (Vicksburg Group), Rupelian (33.9 - 28.1 Ma)

• Cunningham et al. (1998) identified Suwannee LS as Early Oligocene age. Cooke and Mansfield (1936) assigned Suwannee to Vicksburg group. Suwannee assigned to Rupelian Stage (early Oligocene) by Brewster-Wingard et al. (1987) and COSUNA (1988).

• formation-level stratigraphic resolution

Environment/lithology: lithified, white limestone

• Author notes that the fauna indicate warm water conditions rather than cold.
• The formation consists almost entirely of limestone. The unweathered rock is a granular to dense, compact, usually cream-colored rather pure limestone. The lower par is at many places more granular than the upper. Mossom (1925) provided the following lithologic description from the Suwannee LS quarry of the Florida Hard Rock Products Co., Brooksville, FL: Silica - 6.54%; Iron and aluminum - 1.44%; Calcium carbonate - 91.09%; Magnesium carbonate - trace; Undetermined - 0.93%

Primary reference: W. C. Mansfield. 1937. Molluscs of the Tampa and Suwannee Limestones. Geological Bulletin, State of Florida Department of Conservation 15:1-334 [A. Miller/C. Ferguson/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60971: authorized by Arnold Miller, entered by Chad Ferguson on 28.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Occurrence based data only
Show authors, comments, and common names
Echinoidea
 Cassiduloida - Cassidulidae
Rhyncholampas gouldii
Rhyncholampas gouldii Bouvé 1846 sea urchin
Gastropoda
 Neogastropoda - Clathurellidae
? Euclathurella ? liveoakensis
 Neogastropoda - Drilliidae
"Drillia" aff. pleutonica
Bivalvia
 Carditida - Carditidae
Cardita ? liveoakensis
 Cardiida - Veneridae
"Chione aff. bainbridgensis" = Chione (Chionopsis) bainbridgensis
"Chione aff. bainbridgensis" = Chione (Chionopsis) bainbridgensis Dall 1916 venus clam
 Cardiida - Tellinidae
Tellina ? silicata
Tellina ? silicata tellin clam
 Cardiida - Cardiidae
Cardium suwannense, Cardium precursor
 Pholadida - Teredinidae
"? Teredo incrassata" = Kuphus incrassatus
"? Teredo incrassata" = Kuphus incrassatus Gabb 1873 clam
 Mytilida - Mytilidae
Modiolus ? grammatus
Modiolus ? grammatus Dall 1898 mussel
 Pectinida - Pectinoidae
"Chlamys flintensis" = Antillipecten flintensis
"Chlamys flintensis" = Antillipecten flintensis Mansfield 1937 scallop