Where: Washington County, Arkansas (36.0° N, 94.2° W: paleocoordinates 8.6° S, 31.8° W)

• small collection-level geographic resolution

When: Woolsey Member (Bloyd Shale Formation), Morrowan (323.2 - 318.6 Ma)

• The Bloyd Shale includes the Brentwood limestone member at the base, named as a subdivision of the Morrow formation by Adams (1904, p. 28) and Ulrich (1904, p. 109). This is overlain by the Woolsey member, a succession of terrestrial sedimentary rocks, mostly shale and including the Baldwin coal bed. The upper 1/2 to 2/3 of the formation consits largely of black shale consisting an unnamed marine shalemember with a calcareous conglomeratic sandstone at the base at a number of localities and including the Kessler limestone lentil at the top.

•"Upper Pottsville; Lower Coal bearing shale (= Sewanee Stage). ? Mittleres Obercarbon." Handlirsch, 1906

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, black shale and lithified coal

Size class: macrofossils

Preservation: mold/impression

Primary reference: A. Handlirsch. 1906. Revision of American Paleozoic insects. Proceedings of the United States National Museum 29(1441):661-820 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 126550: authorized by Matthew Clapham, entered by Jered Karr on 06.04.2012

Creative Commons license: CC BY (attribution)