USGS 496, 564, 6796, Coatopa (Cretaceous of the United States)

Also known as Sohl and Koch OFR # 125

Where: Sumter County, Alabama (32.5° N, 88.1° W)

• Paleocoordinates: 38.8° N, 54.8° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Discoscaphites conradi ammonoid zone, Prairie Bluff Formation, Late/Upper Maastrichtian (72.2 - 66.0 Ma)

• Haustator bilira assemblage zone

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, sandy lime mudstone

Size class: mesofossils

Preservation: original calcite

Collected by L.W. Stephenson, L.C. Johnson; reposited in the USNM

Primary reference: L. W. Stephenson. 1914. Cretaceous deposits of the eastern gulf region and species of Exogyra from the eastern gulf region and the Carolinas. United States Geological Survey Professional Paper 81:1-55more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4192: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Gastropoda
 Sorbeoconcha - Naticidae
"Gyrodes petrosa" = Gyrodes petrosus
"Gyrodes petrosa" = Gyrodes petrosus Morton 1834 moon snail
 Neogastropoda - Fasciolariidae
Bellifusus sp. Stephenson 1941 snail
 Neogastropoda - Buccinidae
Buccinopsis sp. Conrad 1857 true whelk
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Bivalvia
 Carditida - Crassatellidae
"Crassatellites vadosa" = Crassatella vadosa
"Crassatellites vadosa" = Crassatella vadosa Morton 1834 clam
 Arcida - Cucullaeidae
Cucullaea vulgaris Morton 1830 clam
Cucullaea (Idonearca) capax Conrad
 Ostreida - Gryphaeidae
Pycnodonte sp., "Gryphaea vomer" = Gryphaeostrea vomer, "Exogyra costata" = Exogyra (Exogyra) costata
Pycnodonte sp. Fischer von Waldheim 1835 oyster
"Gryphaea vomer" = Gryphaeostrea vomer Morton 1828 oyster
"Exogyra costata" = Exogyra (Exogyra) costata Say 1820 oyster
Cephalopoda
 Nautilida - Nautilidae
"Nautilus dekayi" = Eutrephoceras dekayi
"Nautilus dekayi" = Eutrephoceras dekayi Morton 1834
 Ammonitida -
Ancyloceratina indet. Wiedmann 1966 ammonite
"Heteromorph ammonite"
 Ammonitida - Scaphitidae
"Scaphites conradi" = Discoscaphites conradi
"Scaphites conradi" = Discoscaphites conradi Morton 1834 ammonite
 Ammonitida - Baculitidae
"Baculites (Eubaculites) carinatus" = Eubaculites carinatus, "Baculites tippaensis" = Eubaculites carinatus, Baculites sp.
"Baculites (Eubaculites) carinatus" = Eubaculites carinatus Morton 1834 ammonite
"Baculites tippaensis" = Eubaculites carinatus Morton 1834 ammonite
Baculites sp. Lamarck 1799 ammonite
 Ammonitida - Diplomoceratidae