USGS Loc. 5184 - Shell Bluff [Shoal River Fm] (Miocene of the United States)

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

• marls, sands, clays, for the most part unconsolidated, in places highly calcareous

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 42875: authorized by Arnold Miller, entered by Karen Layou on 06.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Lingulata
 Lingulida - Disciniidae
Discinisca aldrichi n. sp.
abundant
Bivalvia
 Arcida - Arcidae
"Arca (Diluvarca) waltonia" = Anadara (Diluvarca), "Arca (Diluvarca) strebla" = Anadara (Diluvarca) strebla
"Arca (Diluvarca) waltonia" = Anadara (Diluvarca) ark
present
"Arca (Diluvarca) strebla" = Anadara (Diluvarca) strebla Gardner 1947 ark
rare
 Arcida - Glycymerididae
"Glycymeris waltonensis" = Costaglycymeris waltonensis
"Glycymeris waltonensis" = Costaglycymeris waltonensis Gardner 1947 clam
abundant
 Carditida - Astartidae
 Carditida - Crassatellidae
"Crassatellites (Scambula) densus" = Crassatella densus
"Crassatellites (Scambula) densus" = Crassatella densus Dall 1900 clam
present
 Pholadida - Corbulidae
"Corbula waltonensis" = Varicorbula disparilis
"Corbula waltonensis" = Varicorbula disparilis d'Orbigny 1853 clam
rare
 Cardiida - Chamidae
"Pseudochama (Echinochama) arcinella" = Arcinella arcinella
"Pseudochama (Echinochama) arcinella" = Arcinella arcinella Linnaeus 1767 jewel box
present
 Cardiida - Mactridae
"Spisula (Hemimactra) craspedota" = Spisula craspedota
"Spisula (Hemimactra) craspedota" = Spisula craspedota Gardner 1947 clam
rare
 Cardiida - Ungulinidae
 Cardiida - Veneridae
"Venus nannodes" = Mercenaria nannodes, "Chione (Lirophora) trimeris" = Lirophora (Lirophora) trimeris, Callocardia (Agriopoma) prosayana, "Macrocallista (Paradione) waltonensis" = Pitar (Paradione)
"Venus nannodes" = Mercenaria nannodes Gardner 1947 quahog
present
"Chione (Lirophora) trimeris" = Lirophora (Lirophora) trimeris Gardner 1947 venus clam
present
"Macrocallista (Paradione) waltonensis" = Pitar (Paradione) venus clam
present
 Cardiida - Semelidae
Semele paramutica Gardner 1947 clam
rare
 Cardiida - Cardiidae
"Cardium (Trachycardium) plectopleura" = Trachycardium, "Cardium (Cerastoderma) panastrum" = Cerastoderma, Cardium (Cerastoderma) waltonianum
"Cardium (Trachycardium) plectopleura" = Trachycardium cockle
present
"Cardium (Cerastoderma) panastrum" = Cerastoderma cockle
rare; ? in occurrence table
Cardium (Cerastoderma) waltonianum Dall 1900 cockle
common
 Hiatellida - Hiatellidae
"Panope sp." = Panopea
"Panope sp." = Panopea Menard 1807 clam
rare; ? in occurrence table
 Lucinida - Lucinidae
Gastropoda
 Opisthobranchia - Cylichnidae
Acteocina sphalera barrel-bubble
rare
 Neogastropoda - Olividae
"Oliva liodes" = Oliva (Omogymna) liodes
"Oliva liodes" = Oliva (Omogymna) liodes Dall 1903 olive snail
present; O. liodes waltoniana
 Neogastropoda - Columbellidae
"Strombina waltonia" = Strombina (Strombina) waltonia
"Strombina waltonia" = Strombina (Strombina) waltonia Gardner 1947 snail
common
 Neogastropoda - Nassariidae
"Uzita pedana" = Nassarius (Uzita), "Uzita waltonensis" = Nassarius (Uzita) waltonensis
"Uzita pedana" = Nassarius (Uzita) snail
rare
"Uzita waltonensis" = Nassarius (Uzita) waltonensis Gardner 1936 snail
rare
 Neogastropoda - Fasciolariidae
 Neogastropoda - Cancellariidae
"Cancellaria pinguis" = Cancellaria (Cancellaria) pinguis Gardner 1947 snail
rare
 Neogastropoda - Marginellidae
Marginella (Serrata) vadosa Gardner 1947 margin shell
rare
 Neogastropoda - Muricidae
Typhis (Talityphis) pterinus Gardner 1936 murex snail
rare
 Neogastropoda - Drilliidae
"Agladrillia empera" = Clathrodrillia empera, "Crassispira calligonoides" = Crassispira (Hindsiclava) calligonoides, "Eumetadrillia rabdotacona" = Agladrillia (Eumetadrillia) rabdotacona
"Agladrillia empera" = Clathrodrillia empera Gardner 1938 snail
rare
"Crassispira calligonoides" = Crassispira (Hindsiclava) calligonoides Gardner 1938 snail
rare
"Eumetadrillia rabdotacona" = Agladrillia (Eumetadrillia) rabdotacona Gardner 1947 snail
rare; ? in occurrence table
 Neogastropoda - Conidae
Conus waltonensis Aldrich 1903 cone shell
abundant; also C. waltonensis anodosus (common)
 Neogastropoda - Terebridae
"Terebra (Strioterebrum) waltonensis" = Strioterebrum waltonensis Gardner 1947 auger snail
present; T. (S.) waltonensis tribaka (present)
Terebra (Paraterebra) ? sulcifera Sowerby 1849 auger snail
rare
 Naticoidea - Naticidae
"Polinices judsoni" = Natica judsoni, "Natica (Stigmaulax) guppiana" = Stigmaulax guppiana, Sinum waltonense, Polinices robustus n. sp., "Polinices (Neverita) eucallosus" = Neverita
"Polinices judsoni" = Natica judsoni Maury 1910 moon snail
common
"Natica (Stigmaulax) guppiana" = Stigmaulax guppiana Toula 1909 moon snail
rare
Sinum waltonense moon snail
present
Polinices robustus n. sp. moon snail
rare
"Polinices (Neverita) eucallosus" = Neverita moon snail
present
 Calyptraeoidea - Calyptraeidae
"Crucibulum constrictum" = Crucibulum (Dispotaea) constrictum Conrad 1842 slipper shell
rare; C. constrictum conjuge
"Crucibulum chipolanum" = Crucibulum (Crucibulum) chipolanum Dall 1892 slipper shell
rare; ? in occurrence table, C. chipolanum dodoneum
Calyptraea centralis Conrad 1841 slipper shell
rare
 Tonnoidea - Personidae
"Personella floridana" = Distorsio mcgintyi
"Personella floridana" = Distorsio mcgintyi Emerson and Puffer 1953 snail
rare
 Sorbeoconcha - Turritellidae
"Turritella (Torcula) waltonensis" = Torcula
"Turritella (Torcula) waltonensis" = Torcula turret shell
abundant
 Trochoidea - Trochidae
Calliostoma flumenvadum Gardner 1947 top snail
rare