MGS #35b: Rupelian, Mississippi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cardiida - Veneridae
R category
Chione (Lirophora) victoria
Bivalvia - Carditida - Astartidae
A category
Bivalvia - Arcida - Arcidae
Scapharca invidiosa (Casey 1903)
R category
Bivalvia - Pectinida - Dimyidae
Dimya rufaripa Vokes 1979
A category
Gastropoda - Ranellidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Mitridae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Turridae
Scobinella caelata Conrad 1848
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Clavatulidae
MacNeil and Dockery 1984
Gastropoda - Neogastropoda - Muricidae
Pterynotus angelus (Aldrich 1886)
MacNeil and Dockery 1984
MacNeil and Dockery 1984
MacNeil and Dockery 1984
see common names

Geography
Country:United States State/province:Mississippi County:Wayne
Coordinates: 31.7° North, 88.7° West (view map)
Paleocoordinates:35.3° North, 75.6° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Oligocene
Stage: Rupelian 10 m.y. bin: Cenozoic 4
*Period:Middle Tertiary *Epoch:Early/Lower Oligocene
*International age/stage:Early/Lower Rupelian - Rupelian *Local age/stage:Vicksburg - 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: The basal member of the VicksburGroup, the Red Bluff formation occurs just above the Yazoo Clay.
Lithology and environment
Primary lithology:gray unlithified silty claystone
Secondary lithology: siltstone
Includes fossils?Y
Includes fossils?Y
Lithology description: fossiliferous, dark gray, silty clay with zones of iron concretions in the lower part. also common, sandy lenses.
Environment:prodelta 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
Collection methods:bulk,mechanical,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"
Metadata
Database number:7113
Authorizer:L. Ivany Enterer:E. Kowalski
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:2000-04-26 09:36:28 Last modified:2025-02-22 15:12:02
Access level:the public Released:2000-04-26 09:36:28
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]