USGS Loc. 6826, 11109 - Old Lyle Quarry [Suwannee Lmst] (Oligocene of the United States)

Also known as Mansfield Loc. 50

Where: Suwanee County, Florida (30.3° N, 83.7° W: paleocoordinates 30.4° N, 77.3° W)

• coordinate based on nearby landmark

• outcrop-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 60968: authorized by Arnold Miller, entered by Chad Ferguson on 28.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Occurrence based data only
Gastropoda
 Cerithioidea - Cerithiidae
Cerithium suwannensis, "Cerithium ? pascoensis" = Cestumcerithium pascoensis, "Cerithium liveoakensis" = Cestumcerithium liveoakensis
"Cerithium ? pascoensis" = Cestumcerithium pascoensis Mansfield 1937 cerith snail
"Cerithium liveoakensis" = Cestumcerithium liveoakensis Mansfield 1937 cerith snail
 Cerithioidea - Turritellidae
Turritella cf. halensis Dall 1916 turret shell
 Cerithioidea - Modulidae
 Architaenioglossa - Ampullinidae
 Sorbeoconcha - Strombidae
 Neogastropoda - Olividae
 Neogastropoda - Nassariidae
"Alectrion sp." = Nassarius (Alectrion)
"Alectrion sp." = Nassarius (Alectrion) Montfort 1810 snail
species A
 Neogastropoda - Fasciolariidae
? Latirus sp. Monfort 1810 snail
 Neogastropoda - Clathurellidae
 Neogastropoda - Turbinellidae
"Xancus polygonatus" = Turbinella
"Xancus polygonatus" = Turbinella snail
subspecies: suwannensis
 Neogastropoda - Volutidae
Lyria ? mississippiensis Conrad 1843 volute
 Sorbeoconcha - Xenophoridae
 Sorbeoconcha - Naticidae
Sinum aff. imperforatum Dall 1915 moon snail
 Opisthobranchia - Cylichnidae
Scaphander sp. Monfort 1810 snail
Bivalvia
 Arcida - Arcidae
Barbatia ? marylandica Conrad 1840 clam
 Arcida - Glycymerididae
 Pectinida - Pectinoidae
Chlamys aff. vaun scallop
subspecies: wythei
Chlamys liveoakensis scallop
subspecies: wannensis; liveoakensis is also present in its non-wannensis form
"Chlamys flintensis" = Antillipecten flintensis Mansfield 1937 scallop
 Mytilida - Mytilidae
Modiolus grammatus Dall 1898 mussel
 Lucinida - Lucinidae
 Pholadida - Teredinidae
"? Teredo incrassata" = Kuphus incrassatus
"? Teredo incrassata" = Kuphus incrassatus Gabb 1873 clam
 Cardiida - Veneridae
"Chione aff. bainbridgensis" = Chione (Chionopsis) bainbridgensis
"Chione aff. bainbridgensis" = Chione (Chionopsis) bainbridgensis Dall 1916 venus clam
 Cardiida - Cardiidae
 Cardiida - Tellinidae
Tellina ? silicata tellin clam
 Carditida - Carditidae
"Venericardia ? serricosta" = Venericardia (Glyptoactis) serricosta Heilprin 1887 clam
subspecies: brooksvillensis
Echinoidea
 Cassiduloida - Cassidulidae
Rhyncholampas gouldii Bouvé 1846 sea urchin