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Gateway to the Paleobiology Database
MGS #99b (Oligocene of the United States)

Where: Rankin County, Mississippi (32.2° N, 90.2° W: paleocoordinates 32.5° N, 83.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marianna Limestone Formation, Rupelian (33.9 - 28.4 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] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5953: authorized by Linda Ivany, entered by Sarah DeLong on 04.01.2000

Creative Commons license: CC BY (attribution)