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 strenuum tusk shell
Dentalium mississippiense Conrad 1848 tusk shell | |
Gastropoda | |
Crassispira abundans Conrad 1840 snail | |
Aclis matsoni n. sp.
Aclis matsoni n. sp. aclis | |
Triphora bilineata snail | |
Ficus mississippiensis Conrad 1848 fig shell | |
Semicassis caelatura snail | |
Cymatium vicksburgense n. sp.
Cymatium vicksburgense n. sp. triton shell | |
"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, Pleuroliria cochlearis, "Coronia tenella" = Gemmula (Coronia), Scobinella pluriplicata, Scobinella caelata
Pleurofusia servata turrid
Pleurofusia longirostropis turrid
Pleuroliria cochlearis turrid
"Coronia tenella" = Gemmula (Coronia) turrid
Scobinella caelata Conrad 1848 turrid | |
Lyria mississippiensis Conrad 1843 volute | |
Cymia subalveata murex snail
Siphonochelus curvirostratus Conrad 1848 murex snail | |
Oliva affluens olive snail | |
"Oliva mississippiensis" = Agaronia mississippiensis
"Oliva mississippiensis" = Agaronia mississippiensis Conrad 1848 snail | |
Turbinella wilsoni Conrad 1848 snail | |
Latirus protractus snail | |
"Tritiaria mississippiensis" = Nassarius (Tritiaria)
"Tritiaria mississippiensis" = Nassarius (Tritiaria) snail | |
Levifusus spiniger snail | |
Acteocina crassiplica barrel-bubble |