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: Mint Spring Formation, Rupelian (33.9 - 28.1 Ma)
• The Mint Spring Formation consists mostly of fossiliferous sands that lie disconformably above theestuarine clays and sands 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 5944: 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 | |
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Scaphopoda | |
Dentalium varicostata n. sp.
Dentalium varicostata n. sp. tusk shell | |
Cadulus quadriturritus tusk shell | |
Gastropoda | |
"Semivertagus menthafontis n. sp." = Clava (Semivertagus)
"Semivertagus menthafontis n. sp." = Clava (Semivertagus) cerith snail | |
Serpulorbis sp. Sasso 1827 worm shell | |
Bivalvia | |
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Crenella fenestra n. sp.
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"Chlamys menthifontis" = Chlamys (Lyropecten) menthifontis, "Pecten poulsoni" = Pecten (Pecten) poulsoni, "Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus
"Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus Aldrich 1903 scallop C category
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"Barbatia mississippiensis" = Barbatia (Cucullaearca) mississippiensis, Scapharca delicatula
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Agnocardia glebosum, "Nemocardium diversum" = Nemocardium (Nemocardium) diversum, Trachycardium planicostata n. sp., Laevicardium leptorimum n. sp.
"Nemocardium diversum" = Nemocardium (Nemocardium) diversum Conrad 1848 cockle 100+ valves collected
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Tellina subprotexta n. sp.
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Timothynus turgida, "Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea
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"Chione victoria" = Lirophora (Lirophora) victoria, Chione craspedonta, Pitar megacostata n. sp., Pitar protena n. sp., Pitar aldrichi, Pitar astartiformis, Pitar calcanea, Callista goniopisthus, Callista sobrina
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Lucina imbricolamella n. sp., "Divaricella subrigaultiana" = Divaricella (Divalinga) subrigaultiana, Lucina posteocurta n. sp., Anodontia mississippiensis, Lucina varisculpta n. sp., Lucina fimbripallium n. sp., "Lucina choctavensis" = Lucina (Callucina) choctavensis
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Crassinella variablis n. sp.
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"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
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Astarte planilamella n. sp., Astarte menthifontis n. sp.
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