Where: Walton County, Florida (30.7° N, 86.1° W: paleocoordinates 31.0° N, 83.4° W)
• 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 43024: authorized by Arnold Miller, entered by Karen Layou on 09.08.2004, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Mulina orthria n. sp.
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Gastropoda | |
"Strombiformis (Polygireulima) defuniak n. sp." = Polygireulima
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"Uzita paraprista n. sp." = Nassarius (Nanarius) parapristus, "Uzita dystakta" = Nassarius (Uzita), "Uzita grapta" = Nassarius (Uzita), "Uzita waltonensis" = Nassarius (Uzita) waltonensis
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Strombina lampra n. sp., Mitrella tytha
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"Crassispira calligonoides" = Crassispira (Hindsiclava) calligonoides
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"Terebra (Strioterebrum) waltonensis" = Strioterebrum waltonensis
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"Hemipleurotoma eileta" = Gemmula vaningeni, "Polystira (Pleuroliria) tenagos" = Polystira tenagos
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"Vexillum (Uromitra) ctenotum" = Uromitra
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Cancellaria waltoniana, "Cancellaria defuniak n. sp." = Cancellaria (Cancellaria) defuniak
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"Natica (Naticarius) precursor" = Naticarius precursor, "Polinices judsoni" = Natica judsoni, "Natica (Tectonatica) semen" = Tectonatica, "Natica (Tectonatica) mino" = Tectonatica
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"Architectonica quadriseriata" = Architectonica nobilis, Architectonica verecunda
"Architectonica quadriseriata" = Architectonica nobilis Röding 1798 sundial rare; A. quadriseriata waltonensis
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"Volvula oxytata" = Volvulella (Volvulella) oxytata
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Bivalvia | |
"Arca (Barbatia) adamsi" = Arcopsis adamsi
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"Arca (Diluvarca) waltonia" = Anadara (Diluvarca), "Arca (Diluvarca) strebla" = Anadara (Diluvarca) strebla
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"Pecten (Pseudamussium) defuniak n. sp." = Cyclopecten defuniak
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"Pecten (Chlamys) nicholsi" = Chlamys
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"Ostrea haitensis" = Hyotissa haitensis
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Divaricella waltonia, "Phacoides (Pseudomiltha) paranodonta n. sp." = Pseudomiltha, "Phacoides (Parvilucina) vaughani" = Parvilucina
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"Cuspidaria (Plectodon) cf. granulata" = Plectodon granulatus
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Corbula (Caryocorbula) parawhitfieldi, Corbula (Caryocorbula) seminella, Corbula (Caryocorbula) funiakensis n. sp., "Corbula waltonensis" = Varicorbula disparilis
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"Chama draconis" = Arcinella draconis
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"Gafrarium (Gouldia) phacotum" = Gouldia costaricensis, "Macrocallista (Paradione) waltonensis" = Pitar (Paradione), Callocardia (Agriopoma) prosayana, "Macrocallista (Paradione) maculata" = Macrocallista maculata, "Chione (Lirophora) funiakensis n. sp." = Lirophora (Panchione) funiakensis, Dosinia (Dosinidia) dalli, "Venus prodroma" = Mercenaria prodroma
"Macrocallista (Paradione) maculata" = Macrocallista maculata Linnaeus 1758 venus clam present; ? in occurrence table
"Chione (Lirophora) funiakensis n. sp." = Lirophora (Panchione) funiakensis Gardner 1947 venus clam common
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"Spisula (Hemimactra) craspedota" = Spisula craspedota
"Spisula (Hemimactra) craspedota" = Spisula craspedota Gardner 1947 clam rare; ? in occurrence table
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Tellina (Moerella) piesa, "Macoma (Psammacoma) torynoides n. sp." = Psammacoma torynoides
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"Cardita (Carditamera) defuniak" = Carditamera (Carditamera) defuniak
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"Crassatellites (Crassinella) tanicus" = Crassinella, "Crassatellites (Scambula) densus" = Crassatella densus
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Nucula defuniak n. sp.
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"Leda polychoa" = Nuculana
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