MGS Loc. 108b - Mint Spring Bayou [Mint Spring Fm] (Oligocene of the United States)

Where: Warren County, Mississippi (32.4° N, 90.9° W: paleocoordinates 32.7° 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 and clays 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 enviroment and have a 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 5947: authorized by Linda Ivany, entered by Sarah DeLong on 03.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• The 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.

unclassified
  -
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium varicostata n. sp. tusk shell
Bivalvia
 Carditida - Condylocardiidae
Carditella aldrichi Harris 1919 clam
C category
 Carditida - Astartidae
Astarte menthifontis n. sp. Dockery 1982 clam
R category
Astarte planilamella n. sp. Dockery 1982 clam
100+ valves collected
 Carditida - Carditidae
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis Dall 1903 clam
C category
 Poromyida - Verticordiidae
Verticordia dalliana clam
R category
 Cardiida - Sportellidae
Sportella oblonga Conrad 1848 clam
C category
 Cardiida - Veneridae
Pitar protena n. sp. venus clam
C category
Pitar calcanea venus clam
C category
"Chione victoria" = Lirophora (Lirophora) victoria Dall 1982 venus clam
C category
Chione craspedonta venus clam
R category
Callista sobrina venus clam
C category
 Cardiida - Chamidae
"Chama mississippiensis" = Chama (Psilopus) mississippiensis
"Chama mississippiensis" = Chama (Psilopus) mississippiensis Conrad 1848 jewel box
R category
 Cardiida - Ungulinidae
Diplodonta elatia n. sp. clam
R category
"Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea Conrad 1848 clam
C category
Timothynus turgida Conrad 1848 clam
R category
 Cardiida - Mactridae
Spisula inaequilateralis clam
R category
Spisula mississippiensis clam
R category
 Cardiida - Tellinidae
Tellina subprotexta n. sp. tellin clam
C category
 Cardiida - Donacidae
Donax funerata Conrad 1848 clam
R category
 Cardiida - Semelidae
Ervilia exterolaevis n. sp. clam
C category
Semelina pilsbryi clam
100+ valves collected
Semele mississippiensis clam
C category
 Cardiida - Cardiidae
"Nemocardium diversum" = Nemocardium (Nemocardium) diversum Conrad 1848 cockle
C category
Trachycardium planicostata n. sp. Dockery 1982 cockle
R category
Laevicardium leptorimum n. sp. Dockery 1982 cockle
R category
 Pholadida - Corbulidae
Corbula engonata Conrad 1848 clam
C category
"Corbula laqueata" = Varicorbula laqueata Casey 1903 clam
C category
Tiza alta clam
C category
 Hiatellida - Hiatellidae
Panopea oblongata Conrad 1848 clam
R category
 Lucinida - Lucinidae
Myrtea vicksburgensis Casey 1903 clam
C category
Lucina posteocurta n. sp. Dockery 1982 clam
C category
"Lucina choctavensis" = Lucina (Callucina) choctavensis Meyer 1886 clam
R category
Lucina imbricolamella n. sp. Dockery 1982 clam
C category
 Arcida - Glycymerididae
Glycymeris suwannensis Mansfield 1937 clam
R category
Glycymeris arctata Conrad 1848 clam
C category
 Arcida - Arcidae
Trinacria menthifontis n. sp. Dockery 1982 clam
R category
Scapharca delicatula Casey 1903 clam
C category
Barbatia lima Conrad 1848 clam
R category
 Pectinida - Pectinoidae
"Pecten poulsoni" = Pecten (Pecten) poulsoni
"Pecten poulsoni" = Pecten (Pecten) poulsoni Morton 1834 scallop
C category
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
R category
 Ostreida - Pteriidae
Pteria argentea Conrad 1848 pearl oyster
R category
 Mytilida - Crenellidae
Crenella fenestra n. sp. Dockery 1982 clam
100+ valves collected
 Nuculida - Nuculidae
Nucula vicksburgensis Conrad 1848 nut clam
C category
 Nuculanida - Yoldiidae
Yoldia serica Conrad 1848 clam
R category