Black Bluff horizon (Estelle) (Paleocene to of the United States)

Where: Alabama (32.0° N, 87.2° W: paleocoordinates 34.9° N, 67.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Porters Creek Formation (Midway Group), Danian to Danian (66.0 - 59.2 Ma)

• Black Bluff or Sucarnochee Horizon. From Tsudy and Sorgannus (2000): "lower Eocene Sucarnoochee beds (now Porters Creek Clay) (inner shelf deposits) of Midway Fm., Alabama. AGE: Amended to Late Paleocene (Hendy, 4/2008). Porters Creek Fm is early Paleocene (JAS, 10/10).

• formation-level stratigraphic resolution

Environment/lithology: offshore; brown claystone

• "Consists of aluminous clay, dark chocolate in color"

Size class: macrofossils

Collection methods: No collection data reported in text

Primary reference: T. H. Aldrich. 1921. New Eocene species from Alabama. Bulletins of American Paleontology 9(37) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35081: authorized by Austin Hendy, entered by Austin Hendy on 31.10.2003, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

• Probably fairly representative of molluscan fauna in enterers opinion. Tsudy and Sorhannus (2000) report Decapod fossils from unit.
 Foraminifera -
Foraminifera indet. foram
Foraminifera 12 sp.
 Arcida - Arcidae
? Arca sp. Linnaeus 1758 ark
 Arcida - Glycymerididae
 Arcida - Cucullaeidae
 Pectinida - Propeamussiidae
Propeamussium alabamense Aldrich 1886 mud scallop
 Ostreida - Ostreidae
? Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Pinnidae
? Pinna sp. Linnaeus 1758 oyster
 Mytilida - Mytilidae
"Modiola saffordi" = Modiolus
"Modiola saffordi" = Modiolus mussel
 Carditida - Crassatellidae
"Crassatellites gabbi" = Crassatella, "Crassatellites sepulcollis" = Crassatella
"Crassatellites gabbi" = Crassatella clam
"Crassatellites sepulcollis" = Crassatella clam
 Carditida - Carditidae
"Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis
"Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis Dall 1903 clam
 Pholadida - Corbulidae
"Corbula subcompressa" = Corbula, "Corbula (Aloidis) milium" = Corbula
"Corbula subcompressa" = Corbula clam
"Corbula (Aloidis) milium" = Corbula clam
 Pholadida - Teredinidae
 Cardiida - Veneridae
 Cardiida - Tellinidae
 Cardiida - Cardiidae
Protocardia sp. Beyrich 1845 cockle
 Nuculida - Nuculidae
"Nucula mediavia" = Nucula (Nucula) mediavia, "Nucula ovula" = Nucula (Nucula) ovula
"Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
"Nucula ovula" = Nucula (Nucula) ovula Lea 1833 nut clam
 Protobranchia - Nuculanidae
"Leda parva" = Saccella parva, "Leda quercollis" = Saccella quercollis, "Leda saffordana" = Nuculana, "Leda milamensis" = Nuculana
"Leda parva" = Saccella parva Rogers and Rogers 1837 pointed nut clam
"Leda quercollis" = Saccella quercollis Harris 1896 pointed nut clam
"Leda saffordana" = Nuculana pointed nut clam
"Leda milamensis" = Nuculana pointed nut clam
 Protobranchia - Yoldiidae
 Cephalaspidea - Cylichnidae
 Cephalaspidea - Haminoeidae
 Neogastropoda - Olividae
Olivella mediavia olive snail
 Neogastropoda - Buccinidae
 Neogastropoda - Melongenidae
"Levifusus pagoda" = Levifusus pagodiformis Heilprin 1881 snail
 Neogastropoda - Fasciolariidae
"Fusus tortilis" = Pseudolatirus tortilis
"Fusus tortilis" = Pseudolatirus tortilis Whitfield 1865 snail
 Neogastropoda - Volutidae
 Neogastropoda - Ptychatractidae
 Neogastropoda - Turridae
"Pleurotoma quercollis" = Turris, "Pleurotoma persa" = Turris, "Pleurotoma mediavia" = Turris, "Pleurotoma adeona" = Turris, "Pleurotoma longipersa" = Turris
"Pleurotoma quercollis" = Turris turrid
"Pleurotoma persa" = Turris turrid
"Pleurotoma mediavia" = Turris turrid
"Pleurotoma adeona" = Turris turrid
"Pleurotoma longipersa" = Turris turrid
 Stromboidea - Strombidae
"Fusus quercollis" = Rostellaria (Fusus), "Fusus ottonis" = Rostellaria (Fusus), "Fusus mohri" = Rostellaria (Fusus)
"Fusus quercollis" = Rostellaria (Fusus) true conch
"Fusus ottonis" = Rostellaria (Fusus) true conch
"Fusus mohri" = Rostellaria (Fusus) true conch
 Stromboidea - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail
 Naticoidea - Naticidae
Natica reversa moon snail
Natica onusta moon snail
"Natica eminula" = Polinices eminulus Conrad 1833 moon snail
"Natica limula" = Neverita limula Conrad 1833 moon snail
 Cypraeoidea - Cypraeidae
Cypraea sp. Linnaeus 1758 cowry
Cypraea 2 sp.
 Tonnoidea - Ranellidae
"Triton showalteri" = Charonia
"Triton showalteri" = Charonia triton
 Rissooidea - Rissoidae
 Sorbeoconcha - Turritellidae
Mesalia watsonensis turret shell
Mesalia pumila Gabb 1860 turret shell
"Turritella alabamiensis" = Mesalia alabamiensis De Gregorio 1890 turret shell
"Mesalia alabamiensis" = Mesalia alabamiensis De Gregorio 1890 turret shell
"Turritella mortoni" = Kapalmerella mortoni Conrad 1830 turret shell
Turritella humerosa Conrad 1835 turret shell
 Architectibranchia - Acteonidae
 Allogastropoda - Mathildidae
"Solariella alabamensis" = Toulminella alabamensis
"Solariella alabamensis" = Toulminella alabamensis Aldrich 1886 snail
 Pyramidelloidea - Pyramidellidae
"Amaura tombigbeensis" = Odostomia (Amaura)
"Amaura tombigbeensis" = Odostomia (Amaura) snail
 Architectonicoidea - Architectonicidae
 Dentaliida - Dentaliidae
 Gadilida - Gadilidae
Cadulus turgidus tusk shell
 Nautilida - Nautilidae
Nautilidae indet. de Blainville 1825 nautiloid
 Scleractinia - Dendrophylliidae
Balanophyllia haleana stony coral
[entered as Balanophylla haleana]
 Scleractinia - Guyniidae
Stenocyathus sp. Pourtales 1871 stony coral
Stenocyathus n. sp.
 Scleractinia - Flabellidae
Flabellum conoideum Vaughan 1900 stony coral