Where: Liberty County, Florida (30.4° N, 85.0° W: paleocoordinates 30.8° N, 81.3° 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 42367: authorized by Arnold Miller, entered by Karen Layou on 28.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
"Dentalium (Antalis) chipolanum" = Antalis
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"Cadulus (? Gadila) volvulus" = Gadila
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Gastropoda | |
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"Atys (Aliculastrum) obscuratus" = Atys obscuratus
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"Turritella (Torcula) dalli" = Turritella dalli, Turritella subgrundifera
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"Polinices (Neverita) chipolanus" = Neverita chipolanus, "Natica (Tectonatica) semen" = Tectonatica, "Natica (? Tectonatica) platabasis" = Tectonatica
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Teinostoma phacoton n. sp.
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"Uzita anisonema" = Nassarius (Uzita)
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""Mangelia" klimakota" = Cythara (Mangelia)
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"Vexillum (Uromitra) mikkulum" = Uromitra
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"Marginella (Egouena) apalachee" = Prunum (Microspira) apalachee, "Cypraeolina pyrenoides" = Marginella (Cypraeolina), Marginella (Serrata) nanna, Marginella (Serrata) coloba
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Bivalvia | |
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"Pecten (Chlamys) chipolanus" = Lindapecten chipolanus
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"Ostrea rugifera" = Cubitostrea rugifera
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"Arca (Diluvarca) mikkula" = Anadara (Diluvarca), "Arca (Diluvarca) staminata" = Anadara (Diluvarca), "Arca (Diluvarca) initiator" = Anadara (Diluvarca)
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"Cardium (Cerastoderma) chipolanum" = Cerastoderma chipolanum, "Cardium (Acanthocardia) propeciliare" = Acanthocardia, "Cardium (Fragum) burnsii" = Americardia burnsii, "Cardium (Trachycardium) parile" = Nemocardium parile, "Cardium (Fragum) aliculum" = Trigoniocardia (Trigoniocardia) aliculum, "Cardium (Fragum) sellardsi" = Fragum
"Cardium (Cerastoderma) chipolanum" = Cerastoderma chipolanum Dall 1900 cockle present; C. (C.) chipolanum alumen
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Chione chipolana, "Dosinia (Dosinidia) chipolana" = Dosinia chipolana, "Venus langdoni" = Mercenaria langdoni, "Macrocallista acuminata" = Macrocallista (Macrocallista) acuminata, Pitaria floridana, "Transenella utica" = Transennella, "Gafrarium (Gouldia) erosum" = Gouldia
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"Corbula chipolana" = Varicorbula chipolana, Corbula (Caryocorbula) sarda
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"Divaricella chipolana" = Divaricella (Divaricella) chipolana, "Phacoides (Miltha) xustris n. sp." = Eomiltha xustris, "Phacoides (Linga) glenni" = Here glenni
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"Cardita (Carditamera) apotegea" = Carditamera, Venericardia (Pleuromeris) tellia
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