PBDB Collection

ABu-5 (Porters Creek) (Paleocene of the United States)

Where: Butler County, Alabama (31.9° N, 86.9° W)

• Paleocoordinates: 36.9° N, 56.2° W (Wright 2013)

• 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 - 61.7 Ma)

• revised age information based on Zullo and Perreault 1991. Local section name: ABu-5

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, brown, gray, calcareous sandstone

• The lower 2 m of the PCF are well exposed and include laminated mudstone and claystone with dispersed glauconite and foraminifera and centimeter-diameter, glauconite-ﬁlled, horizontal burrows. The lower part of the PCF is overlain by a 2–3 m interval of discontinuous iron oxide concretions. Above the concretion zone, the upper PCF is massive mudstone in medium to thick beds. (Larsen et al. 2015)

• gray to brown calcareous sand and sandstone

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/P. Mannion]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2855: authorized by Mark Patzkowsky, entered by Karen Layou on 21.07.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

• additional taxa of Zullo and Perreault 1991 include some but not all of the forams and ostracodes, with mention of bryozoans and echinoderms

Show authors, comments, and common names

Nodosariata
Nodosariida - Nodosariidae	Dentalina sp., Nodosaria sp. Dentalina sp. d'Orbigny 1826 Nodosaria sp. Lamarck 1812
Vaginulinida - Vaginulinidae	Lenticulina sp. Lenticulina sp. Lamarck 1804
Anthozoa
Pennatulacea -	Graphularia sp. Graphularia sp. sea pen
Asteroidea
-	Asteroidea indet. Asteroidea indet. de Blainville 1830 sea star "ossicles"
Ophiuroidea
-	Ophiuroidea indet. Ophiuroidea indet. Gray 1840 brittle star "ossicles"
Echinoidea
-	Echinoidea indet. Echinoidea indet. Leske 1778 sea urchin "plates"
Ostracoda
Platycopida - Cytherellidae	Cytherella sp. Cytherella sp. Jones 1849 ostracod
Podocopida - Bairdiidae	Bairdia sp. Bairdia sp. M'Coy 1844 ostracod
Thecostraca
Scalpellomorpha - Scalpellidae	Arcoscalpellum toulmini n. sp. Arcoscalpellum toulmini n. sp. Weisbord 1977 barnacle apparently replaces "Euscalpellum? sp."; species described by Weisbord 1977
Sedentaria
Sabellida - Serpulidae	Rotularia mcglameryae Rotularia mcglameryae
Bivalvia
Ostreida - Ostreidae	"Pycnodonte (Phyrgaea) aff. pulaskensis" = Ostrea pulaskensis "Pycnodonte (Phyrgaea) aff. pulaskensis" = Ostrea pulaskensis Harris 1892 oyster P. (Phyrgaea)
Pholadida - Teredinidae	Teredo sp. Teredo sp. Linnaeus 1758 clam originally entered as "Teredo spp."
Carditida - Carditidae	Venericardia sp. Venericardia sp. Lamarck 1801 clam originally entered as "Venericardia spp."
Cephalopoda
Nautilida - Nautilidae	Eutrephoceras sp. Eutrephoceras sp. Hyatt 1894
Nautilida - Hercoglossidae	Cimomia subrecta Cimomia subrecta Miller and Thompson 1933
Gastropoda
Neogastropoda - Buccinidae	Laevibuccinum constrictum, Pseudoliva sp. Laevibuccinum constrictum true whelk Pseudoliva sp. Swainson 1840 true whelk
Scaphopoda
Dentaliida - Dentaliidae	Dentalium mediaviense Dentalium mediaviense tusk shell