MGS # 34b: Rupelian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Nuculida - Nuculidae
1 individual
R category
41 individuals
C category
8 individuals
R category
Bivalvia - Nuculanida - Yoldiidae
65 individuals
C category
Bivalvia - Pholadida - Pholadidae
1 individual
R category
Bivalvia - Pholadida - Corbulidae
A category
A category
4 individuals
R category
Bivalvia - Cardiida - Veneridae
4 individuals
R category
Bivalvia - Cardiida - Kelliellidae
24 individuals
C category
Bivalvia - Cardiida - Chamidae
2 individuals
R category
Bivalvia - Cardiida - Tellinidae
Tellina lintea (Conrad 1837)
1 individual
R category
Bivalvia - Cardiida - Cardiidae
1 individual
R category
Agnocardia glebosum (Conrad 1848)
1 individual
R category
Bivalvia - Poromyida - Spheniopsidae
47 individuals
C category
Bivalvia - Poromyida - Cuspidariidae
4 individuals
R category
Bivalvia - Poromyida - Verticordiidae
60 individuals
C category
24 individuals
C category
Bivalvia - Lucinida - Lucinidae
Myrtea scopularis (Casey 1903)
A category
A category
Bivalvia - Carditida - Carditidae
1 individual
R category
Bivalvia - Carditida - Astartidae
A category
A category
Bivalvia - Arcida - Glycymerididae
4 individuals
R category
Bivalvia - Arcida - Arcidae
Scapharca invidiosa (Casey 1903)
A category
A category
Bivalvia - Pectinida - Plicatulidae
2 individuals
R category
Bivalvia - Pectinida - Spondylidae
Spondylus dumosus (Morton 1834)
9 individuals
R category
Bivalvia - Pectinida - Pectinidae
Pecten perplanus Morton 1833
3 individuals
R category
34 individuals
C category
Bivalvia - Pectinida - Dimyidae
Dimya rufaripa Vokes 1979
44 individuals
C category
Bivalvia - Ostreida - Ostreidae
Ostrea paroxis Lesueur 1829
3 individuals
R category
2 individuals
R category
Bivalvia - Mytilida - Mytilidae
3 individuals
R category
Gastropoda - Ranellidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Fasciolariidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Mitridae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Turridae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Raphitomidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Borsoniidae
MacNeil and Dockery 1984
MacNeil and Dockery 1984
Microdrillia brevis allo
Gastropoda - Neogastropoda - Clavatulidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Conidae
Conus alveatus Conrad 1865
MacNeil and Dockery 1984
Gastropoda - Tornidae
MacNeil and Dockery 1984
MacNeil and Dockery 1984
Gastropoda - Triphoridae
MacNeil and Dockery 1984
MacNeil and Dockery 1984
Gastropoda - Cerithiidae
MacNeil and Dockery 1984
Gastropoda - Heterostropha - Pyramidellidae
MacNeil and Dockery 1984
MacNeil and Dockery 1984
Gastropoda - Heterostropha - Ringiculidae
MacNeil and Dockery 1984
Ringicula mississsippiensis petila
see common names

Geography
Country:United States State/province:Mississippi County:Wayne County
Coordinates: 31.0° North, 88.7° West (view map)
Paleocoordinates:34.6° North, 75.8° West (Wright 2013)
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 *Local age/stage:Early/Lower Vicksburg - Early/Lower Vicksburg
Key time interval: Rupelian
Age range of interval: 33.9 - 27.3 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Red Bluff
Stratigraphic resolution:formation
Stratigraphy comments: Red Bluff overlies upper Eocene Yazoo Clay at this locality
Lithology and environment
Primary lithology:gray unlithified silty claystone
Secondary lithology: ironstone
Includes fossils?Y
Includes fossils?Y
Lithology description: fossiliferous, dark gray, silty clay with zones of ironstone concretions in lower part
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:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collection method comments: bivalves only
Taxonomic list comments:bivalves only**abundances are given as counts ONLY for those species with fewer than 100 specimens - for 100 or more, he just gives "A" for "abundant". In the case where a collection includes an "A", we enter abundance classes for species instead of counts as follows: Fewer than 10 specimens = R (rare)10 to 99 specimens = C (common)Greater than 99 specimens(Dockery's "A") = A (abundant)In this reference, "specimens" equals "valves"


Since the very abundant taxa were not counted past 99 specimens, they were listed with a category of A otherwise, categories are listed in the comments field, absolute abundances are given in the abundance field.
Metadata
Database number:5500
Authorizer:L. Ivany Enterer:S. DeLong
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:1999-10-07 13:03:09 Last modified:2025-02-22 15:12:02
Access level:the public Released:1999-10-07 13:03:09
Creative Commons license:CC0
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]