AWi-9 (Porters Creek) (Paleocene of the United States)

Where: Wilcox County, Alabama (32.0° N, 87.3° W: paleocoordinates 35.0° N, 67.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Morozovella uncinata and Subbotina trinidadensis foram zone, lower Member (Porters Creek Formation), Danian (66.0 - 61.6 Ma)

• Local section name: AWi-9

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; unlithified, micaceous, gray, yellow, calcareous sandstone

• verbatim lithology description is based on Zullo and Perreault 1991 and matches Toulmin's almost exactly
• grayish-yellow, fine-grained, calcareous, micaceous sand

Size class: mesofossils

Primary reference: L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13 1:1-602 [M. Patzkowsky/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2861: authorized by Mark Patzkowsky, entered by Karen Layou on 21.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• no bryozoans or echinoderms are present
Lagenina
 Nodosariacea - Nodosariidae
Nodosaria sp. Lamarck 1812
Dentalina sp. d'Orbigny 1826
Lenticulina sp. Lamarck 1804
Ostracoda
 Podocopida - Bairdiidae
Bairdiidae indet. Sars 1888 ostracod
 Platycopida - Cytherellidae
Cytherellidae indet. Sars 1866 ostracod
Maxillopoda
 Scalpelliformes - Calanticidae
Polychaeta
 Sabellida - Serpulidae
Rotularia sp.
"common"
Bivalvia
 Arcida - Cucullaeidae
 Ostreida - Ostreidae
Ostrea crenulimarginata Gabb 1860 oyster
"rare"
 Carditida - Carditidae
"Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis
"Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis Dall 1903 clam
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
"a few"
 Nuculida - Nuculidae
"Nucula mediavia" = Nucula (Nucula) mediavia
"Nucula mediavia" = Nucula (Nucula) mediavia Harris 1896 nut clam
 Protobranchia - Nuculanidae
Jupiteria smirna pointed nut clam
Gastropoda
 Cerithiacea - Turritellidae
Turritella aldrichi turret shell
Turritella sp. Lamarck 1799 turret shell
originally entered as "Turritella spp."
 Neogastropoda - Olivellidae
 Neogastropoda - Buccinidae
 Neogastropoda - Fasciolariidae
 Stromboidea - Rostellariidae
Calyptraphorus sp. Conrad 1857 snail
originally entered as "Calyptraphorus spp."
 Naticoidea - Naticidae
Natica reversa moon snail
Natica sp. Scopoli 1777 moon snail
Euspira perspecta moon snail
Scaphopoda
 Dentaliida - Dentaliidae
Cephalopoda
 Nautilida - Hercoglossidae
Hercoglossa ulrichi White 1882 nautiloid
Gnathostomata
  -
Osteichthyes indet. bony fish
"fish bones, teeth, and otoliths are common and diverse"
Anthozoa
 Scleractinia - Dendrophylliidae
Balanophyllia ponderosa Vaughan 1900 stony coral
 Scleractinia - Flabellidae
Flabellum conoideum Vaughan 1900 stony coral