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
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•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 | |
Bivalvia | |
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Lucina posteocurta n. sp., Lucina imbricolamella n. sp., "Lucina choctavensis" = Lucina (Callucina) choctavensis, Myrtea vicksburgensis
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Laevicardium leptorimum n. sp., Trachycardium planicostata n. sp., "Nemocardium diversum" = Nemocardium (Nemocardium) diversum
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Tellina subprotexta n. sp.
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Diplodonta elatia n. sp., Timothynus turgida, "Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea
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"Chama mississippiensis" = Chama (Psilopus) mississippiensis
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Callista sobrina, Chione craspedonta, "Chione victoria" = Lirophora (Lirophora) victoria, Pitar protena n. sp., Pitar calcanea
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Astarte menthifontis n. sp., Astarte planilamella n. sp.
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"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
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Crenella fenestra n. sp.
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"Pecten poulsoni" = Pecten (Pecten) poulsoni
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Scaphopoda | |
Dentalium varicostata n. sp.
Dentalium varicostata n. sp. tusk shell |