MGS #113b (Oligocene of the United States)

Where: Warren County, Mississippi (32.5° N, 90.8° W: paleocoordinates 32.9° N, 84.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Byram Formation, Rupelian (33.9 - 28.1 Ma)

• Byram Formation is fossiliferous, and in some areas it has clayey sands. Macrofauna dominated by bivalves.

• formation-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, shelly/skeletal, sandy, calcareous claystone and sandstone

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 6008: authorized by Linda Ivany, entered by Sarah DeLong on 14.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• List uses catagories. For Example, R = rare, 1 - 9 valves collected. C = common, 10 - 99 valves collected, and A = abundant, 100+ valves collected
Crassitella mississippiensis
1 valves collected
 Arcida - Arcidae
"Scapharca lesueuri" = Cunearca lesueuri
"Scapharca lesueuri" = Cunearca lesueuri Dall 1848 ark
>100 valves collected
 Pectinida - Pectinoidae
Pecten byramensis scallop
1 valve collected
 Neogastropoda - Muricidae
Siphonochelus curvirostratus Conrad 1848 murex snail
 Neogastropoda - Fasciolariidae