Where: Walton County, Florida (30.7° N, 86.1° W)
• Paleocoordinates: 32.9° N, 80.9° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Shoal River Formation (Alum Bluff Group), Serravallian (13.8 - 11.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Shoal River Fm of the Alum Bluff, which lies between the Chipola Fm (Early Miocene) and the Chochtawatchee Fm [Early Pliocene). AGE: Early Miocene (Gardener 1947); Middle Miocene in Vokes (1990) and Portell et al. (2006), although Jones et al. (1993) reports 87Sr/86Sr ratios that yielded average age estimates of 12.4 Ma [=Serravalian]. STRATIGRAPHIC POSITION: From unknown position within formation.
• bed-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 42886: authorized by Arnold Miller, entered by Karen Layou on 06.08.2004
Creative Commons license: CC0 (CC0)
Taxonomic list
Scaphopoda | |
Cadulus (Gadila) spiniformis n. sp.
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Gastropoda | |
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Smaragdia grammica n. sp.
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Kurtziella stephanophora n. sp.
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Clavatula proebenina n. sp.
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"Terebra (Strioterebrum) spirifera" = Strioterebrum spiriferum
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"Agladrillia subvaricosa n. sp." = Clathrodrillia subvaricosa
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Busycon aldrichi n. sp.
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Strombina lampra, Mitrella tytha n. sp.
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"Uzita dasa n. sp." = Nassarius (Uzita), "Uzita prista n. sp." = Nassarius (Uzita), "Uzita waltonensis" = Nassarius (Uzita) waltonensis
"Uzita waltonensis" = Nassarius (Uzita) waltonensis Gardner 1936 snail abundant; U. waltonensis deleta
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"Murex (? Chicoreus) pyknos" = Chicoreus
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Olivella cotinados, "Oliva liodes" = Oliva (Omogymna) liodes
"Oliva liodes" = Oliva (Omogymna) liodes Dall 1903 olive snail rare; ? in occurrence table, O. liodes waltoniana
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"Vexillum (Uromitra) triptum" = Uromitra
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"Cancellaria runchaena" = Cancellaria (Massyla) runchaena, "Cancellaria (Narona) atraktoides" = Narona, Cancellaria druidarum, "Cancellaria (Trigonostoma) sphenoidostoma" = Trigonostoma
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"Natica (Naticarius) precursor" = Naticarius precursor, "Polinices judsoni" = Natica judsoni, "Natica (Tectonatica) mino" = Tectonatica, "Natica (Tectonatica) semen" = Tectonatica, "Polinices (Neverita) eucallosus" = Neverita, "Polinices (Neverita) chipolanus" = Neverita chipolanus
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"Crucibulum waltonense" = Crucibulum (Dispotaea) waltonense, Crucibulum multilineatum, "Crucibulum chipolanum" = Crucibulum (Crucibulum) chipolanum, Calyptraea centralis, Crepidula fornicata
"Crucibulum waltonense" = Crucibulum (Dispotaea) waltonense Gardner 1947 slipper shell rare; ? in occurrence table
"Crucibulum chipolanum" = Crucibulum (Crucibulum) chipolanum Dall 1892 slipper shell present; C. chipolanum dodoneum
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Strombiformis ischna n. sp.
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"Volvula oxytata" = Volvulella (Volvulella) oxytata
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Bivalvia | |
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"Glycymeris waltonensis" = Costaglycymeris waltonensis
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"Arca (Diluvarca) waltonia" = Anadara (Diluvarca)
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"Pecten (Chlamys) nicholsi" = Chlamys
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"Crassatellites (Scambula) densus" = Crassatella densus, "Crassatellites (Crassinella) tanicus" = Crassinella
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"Lucina santarosana" = Pegophysema santarosana, "Phacoides (Pseudomiltha) paranodonta" = Pseudomiltha, "Phacoides (Parvilucina) vaughani n. sp." = Parvilucina
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"Cardium (Fragum) apateticum" = Fragum, "Cardium (Cerastoderma) taphrium" = Dinocardium taphrium
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Tellina (Moerella) piesa, "Macoma (Psammacoma) torynoides" = Psammacoma torynoides, Strigilla sphaerion n. sp.
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"Spisula (Hemimactra) craspedota n. sp." = Spisula craspedota
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Dosinia (Dosinidia) dalli, "Chione (Lirophora) funiakensis" = Lirophora (Panchione) funiakensis, "Clementia grayi" = Clementia (Egesta) grayi, Pitaria waltonensis, "Macrocallista (Paradione) waltonensis" = Pitar (Paradione)
"Chione (Lirophora) funiakensis" = Lirophora (Panchione) funiakensis Gardner 1947 venus clam common; ? in occurrence table
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"Corbula (Caryocorbula) whitfieldi" = Cuneocorbula whitfieldi, "Corbula waltonensis n. sp." = Varicorbula disparilis, Corbula (Caryocorbula) parawhitfieldi, Corbula (Caryocorbula) seminella
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"Pandora (Kennerleyia) dodona" = Pandora (Pandorella) dodona
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