Where: Washington County, Florida (30.6° N, 85.8° W: paleocoordinates 31.0° N, 82.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Chipola Formation (Alum Bluff Group), Burdigalian (20.4 - 16.0 Ma)
• STRATIGRAPHIC POSITION: Lower bed. AGE: Direct date from 87Sr/86Sr isotope dating of fossils from elsewhere in Chipola Fm [=Burdigalian age].
• group of beds-level stratigraphic resolution
Environment/lithology: marine; unlithified, calcareous marl and unlithified, calcareous sandstone
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 42222: authorized by Arnold Miller, entered by Karen Layou on 26.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
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"Teinostoma chipolanum" = Teinostoma (Idioraphe) chipolanum
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"Natica (Naticarius) precursor" = Naticarius precursor, "Natica (? Tectonatica) platabasis" = Tectonatica, "Natica (Tectonatica) semen" = Tectonatica, "? Polinices (Neverita) chipolanus" = Neverita chipolanus
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Bivalvia | |
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"Corbula (Caryocorbula) whitfieldi" = Cuneocorbula whitfieldi, "Corbula chipolana" = Varicorbula chipolana, "Corbula (Bothrocorbula) synarmostes" = Bothrocorbula synarmostes
"Corbula (Caryocorbula) whitfieldi" = Cuneocorbula whitfieldi Brown 1905 clam rare; C. (Caryocorbula) whitfieldi boyntoni
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"Cardium (Cerastoderma) chipolanum" = Cerastoderma chipolanum
"Cardium (Cerastoderma) chipolanum" = Cerastoderma chipolanum Dall 1900 cockle rare; also C. (Cerastoderma) chipolanum alumen (rare)
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Phacoides (Lucinisca) calhounensis, Phacoides (Bellucina) nereididetus, "Phacoides (Parvilucina) sphaeriolus" = Parvilucina
"Phacoides (Parvilucina) sphaeriolus" = Parvilucina clam common; also P. (Parvilucina) sphaeriolus angaleus (present)
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Crassatellites (Crassinella) triangulatus, "Crassatellites (Scambula) chipolanus" = Kalolophus chipolanus
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"Glycymeris subovata" = Costaglycymeris subovata
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"Arca (Diluvarca) latidentata" = Anadara (Diluvarca), "Arca (Diluvarca) hypomela" = Anadara (Diluvarca), "Arca (Diluvarca) santarosana" = Anadara (Diluvarca) santarosana, Arca paratina
"Arca (Diluvarca) santarosana" = Anadara (Diluvarca) santarosana Dall 1898 ark common; A. (Diluvarca) santarosana geraetera
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Pecten burnsii, "Pecten (Chlamys) acanikos" = Lindapecten acanikos
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"Ostrea haitensis" = Hyotissa haitensis
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Scaphopoda | |
"Dentalium (Antalis) chipolanum" = Antalis, Dentalium (Laevidentalium) santarosanum
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"Dentalium (Episiphon) schumoi" = Episiphon
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"Cadulus (Polyschides) lobion" = Polyschides
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