MGS Loc. 100a - Cleary [Mint Spring Fm] (Oligocene of the United States)

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

• 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
  -
Mytea vicksburgensis
100+ valves collected
Amonia microstriata n. sp.
C category
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium varicostata n. sp. tusk shell
 Gadilida - Gadilidae
Bivalvia
 Carditida - Astartidae
Astarte menthifontis n. sp. Dockery 1982 clam
C category
Astarte planilamella n. sp. Dockery 1982 clam
R category
 Carditida - Carditidae
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis Dall 1903 clam
R category
 Carditida - Crassatellidae
Crassinella variablis n. sp. Dockery 1982 clam
R category
 Poromyida - Cuspidariidae
Plectodon intastriata clam
R category
 Poromyida - Verticordiidae
Verticordia dalliana clam
R category
 Cardiida - Sportellidae
Sportella oblonga Conrad 1848 clam
R category
 Cardiida - Veneridae
Pitar megacostata n. sp. venus clam
R category
Pitar protena n. sp. venus clam
R category
Pitar aldrichi venus clam
R category
Pitar astartiformis venus clam
R category
Pitar calcanea venus clam
R category
"Chione victoria" = Lirophora (Lirophora) victoria Dall 1982 venus clam
R category
Chione craspedonta venus clam
R category
Callista goniopisthus venus clam
R category
Callista sobrina venus clam
100+ valves collected
 Cardiida - Ungulinidae
"Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea Conrad 1848 clam
R category
Timothynus turgida Conrad 1848 clam
R category
 Cardiida - Mactridae
Spisula mississippiensis clam
R category
Spisula inaequilateralis clam
C category
 Cardiida - Tellinidae
Tellina subprotexta n. sp. tellin clam
100+ valves collected
 Cardiida - Donacidae
Donax funerata Conrad 1848 clam
R category
 Cardiida - Psammobiidae
Gari papyria clam
R category
 Cardiida - Semelidae
Ervilia exterolaevis n. sp. clam
C category
Semelina pilsbryi clam
C category
Semele staminea clam
R category
 Cardiida - Cardiidae
"Nemocardium diversum" = Nemocardium (Nemocardium) diversum Conrad 1848 cockle
100+ valves collected
Agnocardia glebosum Conrad 1848 cockle
R category
Trachycardium planicostata n. sp. Dockery 1982 cockle
C category
Laevicardium leptorimum n. sp. Dockery 1982 cockle
R category
 Pholadida - Pholadidae
Jouannetia triquetra clam
R category
 Pholadida - Corbulidae
Corbula engonata Conrad 1848 clam
C category
"Corbula laqueata" = Varicorbula laqueata Casey 1903 clam
100+ valves collected
Tiza alta clam
C category
 Lucinida - Lucinidae
Lucina posteocurta n. sp. Dockery 1982 clam
C category
"Lucina choctavensis" = Lucina (Callucina) choctavensis Meyer 1886 clam
C category
Lucina varisculpta n. sp. Dockery 1982 clam
C category
Lucina fimbripallium n. sp. Dockery 1982 clam
R category
Lucina imbricolamella n. sp. Dockery 1982 clam
C category
"Divaricella subrigaultiana" = Divaricella (Divalinga) subrigaultiana Meyer 1886 clam
R category
Anodontia mississippiensis Conrad 1848 clam
100+ valves collected
 Arcida - Glycymerididae
Glycymeris suwannensis Mansfield 1937 clam
R category
Glycymeris arctata Conrad 1848 clam
C category
 Arcida - Arcidae
Scapharca delicatula Casey 1903 clam
C category
"Barbatia mississippiensis" = Barbatia (Cucullaearca) mississippiensis Conrad 1848 clam
R category
 Pectinida - Limidae
Limaria staminea Conrad 1848 file clam
R category
 Pectinida - Pectinoidae
"Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus, "Pecten poulsoni" = Pecten (Pecten) poulsoni, "Chlamys menthifontis" = Chlamys (Lyropecten) menthifontis
"Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus Aldrich 1903 scallop
C category
"Pecten poulsoni" = Pecten (Pecten) poulsoni Morton 1834 scallop
100+ valves collected
"Chlamys menthifontis" = Chlamys (Lyropecten) menthifontis Glawe 1970 scallop
100+ valves collected
 Ostreida - Ostreidae
Lopha vicksburgensis Conrad 1848 oyster
R category
Ostrea paroxis Lesueur 1829 oyster
R category
 Ostreida - Pinnidae
Atrina argentea Conrad 1848 oyster
R category
 Ostreida - Pteriidae
Pteria argentea Conrad 1848 pearl oyster
R category
 Mytilida - Crenellidae
Crenella fenestra n. sp. Dockery 1982 clam
R category
 Nuculida - Nuculidae
Nucula vicksburgensis Conrad 1848 nut clam
100+ valves collected
 Nuculanida - Yoldiidae
Yoldia serica Conrad 1848 clam
C category
Gastropoda
 Cerithioidea - Cerithiidae
"Semivertagus menthafontis n. sp." = Clava (Semivertagus)
"Semivertagus menthafontis n. sp." = Clava (Semivertagus) cerith snail
 Sorbeoconcha - Vermetidae
Serpulorbis sp. Sasso 1827 worm shell