Where: Natchitoches County, Louisiana (31.9° N, 93.0° W: paleocoordinates 32.9° N, 84.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cook Mountain Formation (Claiborne Group), Bartonian (41.3 - 38.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: G. D. Harris. 1919. Pelecypoda of the St. Maurice and Claiborne stages. Bulletins of American Paleontology 6(31):1-208 [J. Sessa/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 107646: authorized by Jocelyn Sessa, entered by Laurie Eccles on 12.04.2011

Creative Commons license: CC BY (attribution)