MGS Loc. 110 - Bliss Creek [Mint Spring Fm] (Oligocene of the United States)

Where: Warren County, Mississippi (32.5° N, 90.8° W: paleocoordinates 32.9° N, 84.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mint Spring Formation, Rupelian (33.9 - 28.1 Ma)

• The Mint Spring Formation consists of fossiliferous sands that lie disconformably above the estuarine clays of the Forest Hill Formation. The sands of the Mint Spring Formation are moderately clean and often show cross-bedding. These sands indicate a near-shore shelf environment and have macrofauna dominated by bivalves.

• formation-level stratigraphic resolution

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

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 5948: authorized by Linda Ivany, entered by Sarah DeLong on 04.01.2000

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. 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.

Bivalvia
 Arcida - Arcidae
Barbatia lima Conrad 1848 clam
R category
"Barbatia mississippiensis" = Barbatia (Cucullaearca) mississippiensis Conrad 1848 clam
R category
Scapharca delicatula Casey 1903 clam
R category
 Arcida - Glycymerididae
Glycymeris arctata Conrad 1848 clam
C category
 Lucinida - Lucinidae
Lucina posteocurta n. sp. Dockery 1982 clam
R category
Myrtea vicksburgensis Casey 1903 clam
R category
Lucina varisculpta n. sp. Dockery 1982 clam
C category
 Pholadida - Corbulidae
Corbula engonata Conrad 1848 clam
C category
"Corbula laqueata" = Varicorbula laqueata Casey 1903 clam
C category
Tiza alta clam
100+ valves collected
 Cardiida - Veneridae
Callista sobrina venus clam
100+ valves collected
Pitar protena n. sp. venus clam
C category
"Chione victoria" = Lirophora (Lirophora) victoria Dall 1982 venus clam
R category
Chione craspedonta venus clam
R category
 Cardiida - Mactridae
Spisula inaequilateralis clam
C category
 Cardiida - Cardiidae
Trachycardium eversum Conrad 1848 cockle
R category
 Cardiida - Donacidae
Donax funerata Conrad 1848 clam
100+ valves collected
 Cardiida - Tellinidae
Tellina subprotexta n. sp. tellin clam
R category
 Cardiida - Semelidae
Ervilia exterolaevis n. sp. clam
R category
 Carditida - Astartidae
Astarte planilamella n. sp. Dockery 1982 clam
R category
 Carditida - Crassatellidae
Crassinella variablis n. sp. Dockery 1982 clam
C category
 Nuculida - Nuculidae
Nucula vicksburgensis Conrad 1848 nut clam
R category
 Nuculanida - Yoldiidae
Yoldia serica Conrad 1848 clam
R category