Where: Pulaski County, Arkansas (34.7° N, 92.3° W: paleocoordinates 38.6° N, 72.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Midway Group, Danian to Danian (66.0 - 59.2 Ma)

• Clayton fm; uppermost Porters Creek fm, Matthews Landing beds; Kincaid fm

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Primary reference: K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99175: authorized by Jocelyn Sessa, entered by Laurie Eccles on 01.11.2010

Creative Commons license: CC BY (attribution)