USGS 6852, Pontotoc (Cretaceous of the United States)

Also known as Sohl and Koch OFR # 59

Where: Pontotoc County, Mississippi (34.2° N, 89.0° W: paleocoordinates 37.8° N, 66.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Discoscaphites conradi ammonoid zone, lower Member (Prairie Bluff Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Haustator bilira assemblage zone

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, calcareous sandstone

Size class: mesofossils

Preservation: original calcite

Collected by L.W. Stephenson; reposited in the USNM

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4138: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
Turritella tippana Conrad 1858 turret shell
Turritella tippana Conrad
Bivalvia
 Arcida - Cucullaeidae
"Cucullaea (Idonearca) capax" = Idonearca capax
"Cucullaea (Idonearca) capax" = Idonearca capax Conrad 1858 clam
Cucullaea (Idonearca) capax Conrad
 Ostreida - Gryphaeidae
Gryphaeostrea vomer Morton 1828 oyster
Gryphaeostrea vomer Morton
 Ostreida - Ostreidae
Ostrea plumosa Morton 1833 oyster
Ostrea plumosa Morton
 Ostreida - Flemingostreidae
Cubitostrea tecticosta Gabb 1860 oyster
Cubitostrea tecticosta (Gabb)
 Myalinida - Inoceramidae
Tenuipteria argenteus clam
Tenuiptereus argenteus (Conrad)
Cephalopoda
 Ammonitida - Scaphitidae
Discoscaphites sp. Meek 1870 ammonite
Discoscaphites sp.
Echinoidea
 Spatangoida - Schizasteridae
Linthia variabilis Slocom 1909 heart urchin
Linthia variabilis Slocum
 Spatangoida - Hemiasteridae