MGS #98a (Oligocene of the United States)

Where: Rankin County, Mississippi (32.3° N, 90.0° W: paleocoordinates 32.6° N, 83.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marianna Limestone Formation, Rupelian (33.9 - 28.1 Ma)

• Marianna Limeatone similar to Mint Spring Formation. Highly carbonaceous, here aragonitic shells generally have been leached leaving only the molds.

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, conglomeratic, calcareous conglomerate and carbonate

Size class: mesofossils

Preservation: original aragonite, original calcite

Collection methods: bulk, mechanical,

• bivalves only.

Primary reference: D. T. Dockery. 1982. Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources Bureau of Geology 123:1-261 [L. Ivany/S. DeLong/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5952: authorized by Linda Ivany, entered by Sarah DeLong on 04.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• list uses catagories. R = rare, 1-9 valves collected. C = common, 10-99 valves collected. A = abundant, 100+ valves collected.

•Categories are listed in the comments field, absolute abundances are given in the abundance field.

•Since taxa with greater than 99 specimens were not counted with absolute abundances, these were reported with category "A" for abundant.

 Pectinida - Pectinoidae
"Pecten poulsoni" = Pecten (Pecten) poulsoni
"Pecten poulsoni" = Pecten (Pecten) poulsoni Morton 1834 scallop
100+ valves collected