Where: Warren County, Mississippi (32.5° N, 90.8° W: paleocoordinates 32.9° N, 84.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Byram Formation, Rupelian (33.9 - 28.1 Ma)
• The Byram Formation is fossiliferous in most places and clayey in other areas. Macrofauna dominated by bivalves.
• formation-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, shelly/skeletal, sandy, calcareous claystone and sandstone
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 5999: authorized by Linda Ivany, entered by Sarah DeLong on 13.01.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
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•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 | |
Bivalvia | |
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"Scapharca lesueuri" = Cunearca lesueuri, "Barbatia mississippiensis" = Barbatia (Cucullaearca) mississippiensis
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Scaphopoda | |
Dentalium mississippiense Conrad 1848 tusk shell
Dentalium strenuum tusk shell | |
Gastropoda | |
Acteocina crassiplica barrel-bubble | |
Ficus mississippiensis Conrad 1848 fig shell | |
Turbinella wilsoni Conrad 1848 snail | |
Cymia subalveata murex snail
Siphonochelus curvirostratus Conrad 1848 murex snail | |
Lyria mississippiensis Conrad 1843 volute | |
"Oliva mississippiensis" = Agaronia mississippiensis
"Oliva mississippiensis" = Agaronia mississippiensis Conrad 1848 snail | |
Oliva affluens olive snail | |
"Conus alveatus" = Conus sauridens, Conorbis porcellanus
"Conus alveatus" = Conus sauridens Conrad 1833 cone shell
Conorbis porcellanus cone shell | |
Bathytoma congesta snail | |
Terebra divisura auger snail
Terebra tantula Conrad 1848 auger snail | |
Pleurofusia servata, Pleurofusia longirostropis, Scobinella pluriplicata, Scobinella caelata, "Coronia tenella" = Gemmula (Coronia), Pleuroliria cochlearis
Pleurofusia servata turrid
Pleurofusia longirostropis turrid
Scobinella caelata Conrad 1848 turrid
"Coronia tenella" = Gemmula (Coronia) turrid
Pleuroliria cochlearis turrid | |
Levifusus spiniger snail | |
"Tritiaria mississippiensis" = Nassarius (Tritiaria)
"Tritiaria mississippiensis" = Nassarius (Tritiaria) snail | |
Latirus protractus snail | |
Semicassis caelatura snail | |
Cymatium vicksburgense n. sp.
Cymatium vicksburgense n. sp. triton shell | |
Triphora bilineata snail | |
Aclis matsoni n. sp.
Aclis matsoni n. sp. aclis | |
Crassispira abundans Conrad 1840 snail |