MGS Loc. 97 - Brandon [Mint Spring Fm]: Rupelian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Amonia microstriata n. sp.
1 individual
R category
Bivalvia - Nuculida - Nuculidae
Nucula vicksburgensis Conrad 1848
1 individual
R category
Bivalvia - Thraciida - Thraciidae
Thracia vicksburgiana
2 individuals
R category
Bivalvia - Pholadida - Corbulidae
Tiza alta
3 individuals
R category
Corbula laqueata Casey 1903
1 individual
recombined as Varicorbula laqueata
R category
Bivalvia - Cardiida - Semelidae
Semele mississippiensis
1 individual
R category
Bivalvia - Cardiida - Tellinidae
Tellina subprotexta n. sp.
1 individual
R category
Bivalvia - Cardiida - Donacidae
Donax funerata Conrad 1848
1 individual
R category
Bivalvia - Cardiida - Cardiidae
Laevicardium leptorimum n. sp. Dockery 1982
2 individuals
R category
Trachycardium planicostata n. sp. Dockery 1982
4 individuals
R category
Bivalvia - Cardiida - Veneridae
Pitar protena n. sp.
1 individual
R category
Pitar calcanea
3 individuals
R category
Callista sobrina
15 individuals
C category
Chione victoria (Dall 1982)
1 individual
recombined as Lirophora (Lirophora) victoria
R category
Bivalvia - Cardiida - Mactridae
Spisula inaequilateralis
1 individual
R category
Bivalvia - Cardiida - Trapezidae
Coralliophaga corrugata n. sp.
2 individuals
R category
Bivalvia - Lucinida - Lucinidae
Myrtea vicksburgensis (Casey 1903)
3 individuals
R category
Anodontia mississippiensis (Conrad 1848)
2 individuals
R category
Lucina imbricolamella n. sp. Dockery 1982
1 individual
R category
Lucina varisculpta n. sp. Dockery 1982
1 individual
R category
Lucina fimbripallium n. sp. Dockery 1982
16 individuals
C category
Divaricella subrigaultiana (Meyer 1886)
2 individuals
recombined as Divaricella (Divalinga) subrigaultiana
R category
Bivalvia - Carditida - Astartidae
Astarte menthifontis n. sp. Dockery 1982
1 individual
R category
Bivalvia - Carditida - Carditidae
Venericardia carsonensis Dall 1903
3 individuals
recombined as Venericardia (Rotundicardia) carsonensis
R category
Bivalvia - Arcida - Arcidae
Barbatia mississippiensis (Conrad 1848)
3 individuals
recombined as Barbatia (Cucullaearca) mississippiensis
R category
Scapharca delicatula (Casey 1903)
1 individual
R category
Bivalvia - Arcida - Glycymerididae
Glycymeris arctata (Conrad 1848)
4 individuals
R category
Glycymeris suwannensis Mansfield 1937
3 individuals
R category
Bivalvia - Pectinida - Spondylidae
Spondylus filiaris Dall 1916
1 individual
recombined as Spondylus (Spondylus) filiaris
R category
Bivalvia - Pectinida - Pectinidae
Pecten poulsoni Morton 1834
14 individuals
recombined as Pecten (Pecten) poulsoni
C category
Bivalvia - Ostreida - Ostreidae
Ostrea paroxis Lesueur 1829
10 individuals
C category
Bivalvia - Ostreida - Pteriidae
Pteria argentea (Conrad 1848)
1 individual
R category
Bivalvia - Mytilida - Mytilidae
Arcoperna linteata n. sp. Dockery 1982
1 individual
R category
Gastropoda - Cerithiidae
Semivertagus menthafontis n. sp.
MacNeil and Dockery 1984
spelled with current rank as Clava (Semivertagus)
see common names

Geography
Country:United States State/province:Mississippi County:Rankin
Coordinates: 32.3° North, 90.0° West (view map)
Paleocoordinates:32.6° North, 83.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
*Period:Early/Lower Tertiary *Epoch:Early/Lower Oligocene
*International age/stage:Early/Lower Rupelian - Early/Lower Rupelian
Key time interval:Rupelian
Age range of interval:33.90000 - 27.82000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Mint Spring
Stratigraphic resolution:formation
Stratigraphy comments: The Mint Spring Formation consists of fossiliferous sands that lie disconformably above the estuarine clays and sands of the Forest Hill Formation. This contact is characterized by shell gravels that are largely comprised of the bivalve "Callista", by lithified clay clasts bored by the bivalve "Jouannetia", and by shark and ray teeth. Lithified clay clasts are especially common at the base of the Mint Spring Formation along the Chickasawhay River in Wayne County. Here clay clasts are numerous enough to form a cobble bottom on the Mint Spring sea floor. These clasts formed a hard substrate utilized by a variety of encrusting organisms. 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 macrofauna dominated by bivalves.
Lithology and environment
Primary lithology: lithified conglomeratic,calcareous conglomerate
Secondary lithology: wackestone
Includes fossils?Y
Includes fossils?Y
Environment:offshore Tectonic setting:passive margin
Taphonomy
Modes of preservation:body,original aragonite,original calcite
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:all microfossils,some macrofossils,difficult macrofossils
Collection methods:bulk,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: bivalves only.
Taxonomic list comments:the taxonomic list uses catigories to describe the abundances of the valves. 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.
Metadata
Database number:5942
Authorizer:L. Ivany Enterer:S. DeLong
Modifier:A. Hendy Research group:GCP,marine invertebrate
Created:2000-01-01 20:55:20 Last modified:2014-08-21 11:46:30
Access level:the public Released:2000-01-01 20:55:20
Creative Commons license:CC BY
Reference information

Primary reference:

323. 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]

Secondary references:

447 F. S. MacNeil and D. T. Dockery. 1984. Lower Oligocene Gastropoda, Scaphopoda, and Cephalopoda of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources, Bureau of Geology Bulletin 124:1-415 [L. Ivany/E. Kowalski/P. Wagner]