Kessler Limestone member, Bloyd Shale; USGS 13977 (Carboniferous of the United States)

Also known as Locality Bk 5; Henbest, Dec. 1, 1947

Where: Washington County, Arkansas (35.9° N, 94.2° W: paleocoordinates 8.7° S, 31.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Kessler Limestone Member (Bloyd Formation), Morrowan (323.2 - 318.6 Ma)

• Member is below the Witt Springs formation.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, gray, silty limestone

• Near the top of the Bloyd shale in Washington County is the kessler limestone member, the thickness of which ranges from about 10 to 15 feet. It consists of gray shaly limestone, which weathers yellowish to reddish brown with streaks of lighter color, is locally sandy and oolitic and commonly forms low moss-covered bluffs in outcrop.

Size class: macrofossils

Reposited in the USGS

Primary reference: M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322 [J. Alroy/C. Simpson/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43420: authorized by John Alroy, entered by Carl Simpson on 13.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Tainoceratidae
Metacoceras sp.
Metacoceras sp. Hyatt 1883