MGS Loc. 117b - Waynesboro [Mint Spring Fm]: Rupelian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pholadida - Pholadidae
Jouannetia triquetra
A category
100+ valves collected
Bivalvia - Carditida - Crassatellidae
Crassatella lirasculpta n. sp. Dockery 1982
1 individual
R category
Bivalvia - Arcida - Glycymerididae
Glycymeris suwannensis Mansfield 1937
1 individual
R category
Bivalvia - Pectinida - Spondylidae
Spondylus filiaris Dall 1916
2 individuals
recombined as Spondylus (Spondylus) filiaris
R category
see common names

Geography
Country:United States State/province:Mississippi County:Wayne
Coordinates: 31.7° North, 88.6° West (view map)
Paleocoordinates:32.0° North, 82.2° 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. The sands of the Mint Spring Formation are moderately clean and often show cross-bedding. These sands indicate a near-shore shelf environment and have a 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: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.
Metadata
Database number:5950
Authorizer:L. Ivany Enterer:S. DeLong
Modifier:A. Hendy Research group:GCP,marine invertebrate
Created:2000-01-04 08:21:12 Last modified:2014-08-21 11:37:30
Access level:the public Released:2000-01-04 08:21:12
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]