USGS Loc. 14820, Americus LS member, Foraker LS formation (Carboniferous of the United States)

Where: Elk County, Kansas (37.3° N, 96.5° W: paleocoordinates 3.0° S, 29.0° W)

• outcrop-level geographic resolution

When: Americus Limestone Member (Foraker Limestone Formation), Noginskian (301.2 - 300.1 Ma)

• The authors placed the Americus Limestone in the Permian, but more recent data indicates that it was late Carboniferous. The Noginskian stage is recognized as equivalent to the Virgilian Stage.

• bed-level stratigraphic resolution

Environment/lithology: marine; gray, conglomeratic limestone

• Limestone, hard, gray, weathers blocky; conglomeratic, with small rounded to angular fragments of limestone that are not over one-eighth inch in diameter; stromatolites abundant in upper part

Reposited in the USGS

Primary reference: M. R. Mudge, E. L. Yochelson, R. C. Douglas, H. Duncan, H. L. Strimple, M. Gordon, Jr., and D. H. Dunkle. 1962. Stratigraphy and Paleontology of the Uppermost Pennsylvanian and Lowermost Permian Rocks in Kansas. United States Geological Survey Professional Paper 323:1-213 [A. Miller/C. Ferguson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 11830: authorized by Arnold Miller, entered by Chad Ferguson on 13.09.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Stromatolites are listed as being present in the limestone, but are unidentified.
Show authors, comments, and common names
Strophomenata
 Productida - Linoproductidae
"Linoproductus magnispinus" = Linipalus magnispinus
"Linoproductus magnispinus" = Linipalus magnispinus Dunbar and Condra 1932
 Productida - Echinoconchidae
"Juresania nebrascensis" = Parajuresania nebrascensis
"Juresania nebrascensis" = Parajuresania nebrascensis Owen 1852