Warm Mineral Springs, Fort Thompson Formation, Sarasota County, southwest FL (Pleistocene of the United States)

Where: Sarasota County, Florida (27.1° N, 82.3° W: paleocoordinates 27.6° N, 82.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Fort Thompson Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• COMMENTS: The Fort Thompson Formation is given a stage age of Bradyan. AGE: Assigned Pleistocene in text, reassigned to Late Pleistocene by A. Hendy (2007).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; unlithified, fine-grained, medium, sandy marl and unlithified, gray sandstone

• four beds are described for the section, from bottom to top: (1) marl, fresh water unconsolidated, gray, with mollusks and vertebrate remains; (2) oyster marl, local lenses; (3) shell marl, marine, sandy, fine to medium grained, unconsolidated, tan, with many mollusk shells and some vertebrate fossils; (4) sand, quartz, unconsolidated, reddish brown and gray; no fossils; fossils from marine shell bed

Size class: macrofossils

Collection methods: bulk,

Primary reference: J. R. DuBar. 1962. Neogene Biostratigraphy of the Charlotte Harbor Area in Southwestern Florida. Florida Geological Survey Geological Bulletin 43 1-83 [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41740: authorized by Arnold Miller, entered by Karen Layou on 20.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Pyrigiscus cf. sisphusi, Pyrigiscus cf. tellusae, Pyrigiscus "sp. a", Vertebrata indet.
Vertebrata indet. Lamarck 1801
vertebrate fossils
Mammalia
 Perissodactyla - Equidae
Equus leidyi
Equus leidyi Hay 1913 horse
teeth
Gastropoda
 Cerithioidea - Cerithiidae
Cerithium muscarum
Cerithium muscarum Say 1832 cerith snail
rare
 Sorbeoconcha - Naticidae
"Polinices duplicatus" = Neverita duplicatus
"Polinices duplicatus" = Neverita duplicatus Say 1822 moon snail
rare
 Sorbeoconcha - Strombidae
Strombus alatus
Strombus alatus Gmelin 1792 conch
rare; immature
 Neogastropoda - Marginellidae
"Marginella apicina" = Prunum apicinum
"Marginella apicina" = Prunum apicinum Menke 1828 margin shell
rare
 Neogastropoda - Olividae
Olivella mutica
Olivella mutica Say 1822 olive snail
rare; rather slender, so perhaps is O. pusilla
 Neogastropoda - Terebridae
? Terebra sp.
? Terebra sp. Bruguière 1789 auger snail
rare
 Neogastropoda - Columbellidae
Anachis obesus, ? Anachis "sp. a"
Anachis obesus snail
rare; A. obesus subsp?
? Anachis "sp. a" Adams and Adams 1853 snail
fairly common
 Neogastropoda - Nassariidae
Nassarius bidentatus, Nassarius sp., Nassarius vibex
Nassarius bidentatus snail
rare; slender form
Nassarius sp. Duméril 1806 snail
rare
Nassarius vibex Say 1822 snail
rare
 Neogastropoda - Fasciolariidae
"Fasciolaria distans" = Cinctura lilium, "Fasciolaria ? apicina" = Fasciolaria (Fasciolaria) apicina
"Fasciolaria distans" = Cinctura lilium Fischer 1807 snail
rare
"Fasciolaria ? apicina" = Fasciolaria (Fasciolaria) apicina Dall 1890 tulip snail
rare; has protoconch sculpture of Caloosahatchee sp.
 Neogastropoda - Melongenidae
Melongena corona, "Busycon pyrum" = Busycotypus spiratus, Busycon contrarium
Melongena corona Gmelin 1791 snail
rare
"Busycon pyrum" = Busycotypus spiratus Lamarck 1816 whelk
rare; B. pyrum subsp. a?
Busycon contrarium Conrad 1840 whelk
rare
 Neotaenioglossa - Calyptraeidae
Crepidula plana
Crepidula plana Say 1822 slipper shell
fairly common
 Opisthobranchia - Cylichnidae
"Retusa canaliculata" = Acteocina canaliculata
"Retusa canaliculata" = Acteocina canaliculata Say 1826 barrel-bubble
rare
 Heterostropha - Acteonidae
"Actaeon sp." = Acteon
"Actaeon sp." = Acteon Montfort 1810 snail
rare
 Heterostropha - Pyramidellidae
"Longchaeus cf. marionae" = Pyramidella suturalis, Turbonilla "sp. a", "Turbonilla cf. alcmena" = Turbonilla levis
"Longchaeus cf. marionae" = Pyramidella suturalis Lea 1843 snail
rare
Turbonilla "sp. a" Risso 1826 snail
rare
"Turbonilla cf. alcmena" = Turbonilla levis Adams 1850 snail
rare
Bivalvia
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam
rare
 Carditida - Carditidae
Cardita sp.
Cardita sp. Bruguière 1792 clam
rare; very close to C. arata of Caloosahatchee Marl
 Cardiida - Mactridae
Mulinia lateralis
Mulinia lateralis Say 1822 clam
common
 Cardiida - Veneridae
Parastarte triquetra, "Macrocallista nimbosa" = Macrocallista (Macrocallista) nimbosa, Transennella cf. stimpsoni, Transennella conradina, Chione cancellata, Anomalocardia caloosana, "Venus campechiensis" = Mercenaria campechiensis
Parastarte triquetra Conrad 1862 venus clam
abundant; V. smithvillensis petropolitana
"Macrocallista nimbosa" = Macrocallista (Macrocallista) nimbosa Solander 1786 venus clam
rare
Transennella cf. stimpsoni Dall 1902 venus clam
rare
Transennella conradina Dall 1884 venus clam
abundant
Chione cancellata Linnaeus 1767 venus clam
abundant
Anomalocardia caloosana venus clam
common
"Venus campechiensis" = Mercenaria campechiensis Gmelin 1791 quahog
rare
 Cardiida - Tellinidae
"Tellina sayi" = Angulus texanus, Tellidora cristata
"Tellina sayi" = Angulus texanus Dall 1900 tellin clam
rare
Tellidora cristata Récluz 1842 tellin clam
rare
 Cardiida - Semelidae
Abra aequalis
Abra aequalis Say 1822 abra
rare
 Cardiida - Cardiidae
Laevicardium mortoni
Laevicardium mortoni Conrad 1831 cockle
rare
 Lucinida - Lucinidae
"Phacoides multilineatus" = Parvilucina multistriata
"Phacoides multilineatus" = Parvilucina multistriata Conrad 1841 clam
common
 Pectinida - Plicatulidae
Plicatula sp.
Plicatula sp. Lamarck 1801 scallop
rare
 Arcida - Arcidae
Anadara "sp. a", "Anadara transversa" = Anadara (Larkinia) transversa
Anadara "sp. a" Gray 1847 ark
rare
"Anadara transversa" = Anadara (Larkinia) transversa Say 1822 ark
fairly common