USGS 25510 (Cretaceous of the United States)

Also known as Roadcuts on Mississippi Route 30, on N-facing slope of Wilhite Creek valley from 0.7 to 1.7 miles S of Keownville, Union Co., Miss.

Where: Union County, Mississippi (34.5° N, 89.0° W: paleocoordinates 38.2° N, 65.8° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Keownville Member (Ripley Formation), Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; glauconitic, silty, calcareous sandstone

• Sand, brownish-yellow, medium-grained, silty, micaceous, calcareous, sparingly glauconitic, fossiliferous, with a zone of cyclostomatous bryozoans near base of unit.

Size class: mesofossils

Reposited in the USGS

• ? L.W. Stephenson and N.F. Sohl 1955

Primary reference: N. F. Sohl. 1960. Archeogastropoda, Mesogastropoda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations. US Geological Survey Professional Paper 331:1-151 [M. Kosnik/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 7607: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
"Haustator trilira" = Turritella trilira
"Haustator trilira" = Turritella trilira Conrad 1860 turret shell
Turritella trilira Morton
 Neogastropoda - Fasciolariidae
Bellifusus sp. Stephenson 1941 snail
Bellifusus sp.
Bivalvia
 Ostreida - Ostreidae
Acutostrea plumosa oyster
Ostrea plumosa Morton
 Pectinida - Limidae
Pseudolimea reticulata file clam
Lima reticulata Lyell and Forbes
 Arcida - Cucullaeidae
"Cucullaea capax" = Idonearca capax
"Cucullaea capax" = Idonearca capax Conrad 1858 clam
Idonearca capax (Conrad)