Where: Wayne County, Mississippi (31.7° N, 88.7° W: paleocoordinates 31.9° N, 82.2° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Red Bluff Formation (Vicksburg Group), Rupelian (33.9 - 28.1 Ma)

• Sample Level 7 3.5m above base of red bluff formation.

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•The basal member of the Vicksburg Group, the Red Bluff formation occurs just above the Yazoo Clay.

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•The contact between the Yazoo clay and the overlying silty glauconitic Red Bluff formation is abrupt and contains the features of a typical disconformable transgressive contact

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, glauconitic, gray, silty claystone and siltstone

Size class: mesofossils

Preservation: original aragonite, original calcite

Collection methods: bulk, mechanical,

• molluscs only---Samples were dried and washed through 1.00m sieves. Wet sieved with minimal breakage. Random subsamples of the washed shell material were taken and completely picked for all identifiable shells including bivalve beaks and gastropod apices. All bivalve beaks were counted and then divided by two. Each gastropod apex was counted as one individual.

Primary reference: T. A. Hansen, P.H. Kelley, and D.M. Haasl. 2004. Paleoecological patterns in molluscan extinctions and recoveries: comparison of the Cretaceous-Paleogene and Eocene-Oligocene extinctions in North America. Palaeogeography, Palaeoclimatology, Palaeoecology 214:233-242 [A. Miller/K. Bulinski]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 74083: authorized by Arnold Miller, entered by Kate Bulinski on 20.07.2007

Creative Commons license: CC BY (attribution)