Where: Calhoun County, Florida (30.4° N, 85.2° W)
• Paleocoordinates: 33.1° N, 77.8° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Chipola Formation (Alum Bluff Group), Burdigalian (20.4 - 16.0 Ma)
• 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 42281: authorized by Arnold Miller, entered by Karen Layou on 27.07.2004
Creative Commons license: CC0 (CC0)
Taxonomic list
Gastropoda | |
"Natica (Tectonatica) semen" = Tectonatica, "Natica (Naticarius) precursor" = Naticarius precursor
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"Uzita cinclis" = Nassarius (Uzita) cinclis, Engoniophos glyptus
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? Ithycythara radinos, "Mangelia sextoni n. sp." = Cythara (Mangelia), ""Cythara" barbadoides" = Cytharella barbadoides
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"Volvula oxytata" = Volvulella (Volvulella) oxytata
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Scaphopoda | |
"Cadulus (Polyschides) lobion" = Polyschides
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"Dentalium (Episiphon) schumoi" = Episiphon
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Bivalvia | |
"Pecten (Chlamys) chipolanus" = Lindapecten chipolanus
"Pecten (Chlamys) chipolanus" = Lindapecten chipolanus Dall 1898 scallop rare; ? in occurrence table
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"Arca (Diluvarca) hypomela" = Anadara (Diluvarca), "Arca (Diluvarca) santarosana" = Anadara (Diluvarca) santarosana
"Arca (Diluvarca) santarosana" = Anadara (Diluvarca) santarosana Dall 1898 ark present; A. (D.) santarosana geraetera
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"Codakia (Jagonia) erosa" = Ctena, Phacoides (Lucinisca) calhounensis, "Phacoides (Parvilucina) sphaeriolus" = Parvilucina
"Phacoides (Parvilucina) sphaeriolus" = Parvilucina clam present; also P. (P.) sphaeriolus angaleus n. subsp. (present)
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"Cardium (Laevicardium) compressum" = Laevicardium compressum, "Cardium (Fragum) burnsii" = Americardia burnsii, "Cardium (Cerastoderma) chipolanum" = Cerastoderma chipolanum
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"Chama draconis" = Arcinella draconis
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"Dosinia (Dosinidia) chipolana" = Dosinia chipolana, "Chione (Lirophora) burnsii" = Lirophora, "Macrocallista (Paradione) maculata" = Macrocallista maculata, "Transenella chipolana" = Transennella, Pitaria floridana, "Gafrarium (Gouldia) erosum" = Gouldia
"Dosinia (Dosinidia) chipolana" = Dosinia chipolana Dall 1903 venus clam rare; ? in occurrence table
"Gafrarium (Gouldia) erosum" = Gouldia venus clam present; G. (G.) erosum bolteni, ? in occurrence table
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"Corbula (Bothrocorbula) synarmostes" = Bothrocorbula synarmostes, "Corbula chipolana" = Varicorbula chipolana, Corbula (Caryocorbula) semenoides
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"Venericardia hadra" = Venericardia (Glyptoactis) hadra, "Cardita (Carditamera) apotegea" = Carditamera, Venericardia (Pleuromeris) tellia
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"Leda proteracuta n. sp." = Nuculana, "Leda canonica" = Saccella canonica
"Leda proteracuta n. sp." = Nuculana pointed nut clam present; also L. proteracuta dystakta (rare), L. proteracuta leita n. subsp. (present), and L. proteracuta diamesa n. subsp. (present)
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