MGS # 34b (Oligocene of the United States)

Where: Wayne County County, Mississippi (31.0° N, 88.7° W: paleocoordinates 31.3° N, 82.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Red Bluff Formation, Rupelian (33.9 - 28.1 Ma)

• Red Bluff overlies upper Eocene Yazoo Clay at this locality

• formation-level stratigraphic resolution

Environment/lithology: offshore; unlithified, gray, silty claystone and ironstone

• fossiliferous, dark gray, silty clay with zones of ironstone concretions in lower part

Size class: mesofossils

Preservation: original aragonite, original calcite

Collection methods: surface (in situ),

• 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 5500: authorized by Linda Ivany, entered by Sarah DeLong on 07.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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.

Show authors, comments, and common names
Gastropoda
 Heterostropha - Pyramidellidae
Odostomia byramensis, Turbonilla mississippiensis
 Heterostropha - Ringiculidae
Ringicula mississippiensis
Ringicula mississippiensis Conrad 1848 snail
Ringicula mississsippiensis petila
 Cerithioidea - Cerithiidae
Alabina menthafontis n. sp.
Alabina menthafontis n. sp. cerith snail
 Sorbeoconcha - Triphoridae
Triphora meridionalis, Triphora bilineata
 Sorbeoconcha - Tornidae
Teinostoma verrilli, Tornus infraplicatus
Tornus infraplicatus Johnson 1899 snail
 Neogastropoda -
Clavidrupa anita
 Neogastropoda - Fasciolariidae
Clavilithes longiformis
 Neogastropoda - Mitridae
Mitra conquista
Mitra conquista mitre shell
 Neogastropoda - Clavatulidae
Turricula longiforma
 Neogastropoda - Conidae
"Conus alveatus" = Conus sauridens
"Conus alveatus" = Conus sauridens Conrad 1833 cone shell
 Neogastropoda - Raphitomidae
Phandella transemma n. sp.
Phandella transemma n. sp. snail
 Neogastropoda - Turridae
Pleurofusia oblivia
 Neogastropoda - Borsoniidae
Microdrillia brevis, Microdrillia vicksburgella
Microdrillia brevis snail
Microdrillia brevis allo
 Sorbeoconcha - Ranellidae
Sassia conradiana
Sassia conradiana triton shell
Bivalvia
 Nuculanida - Yoldiidae
Yoldia clydoniona n. sp.
Yoldia clydoniona n. sp. Dockery 1982 clam
C category
 Nuculida - Nuculidae
Nucula vicksburgensis, Nucula tallahalaensis n. sp., Brevinucula pseudopunctata n. sp.
Nucula vicksburgensis Conrad 1848 nut clam
C category
Nucula tallahalaensis n. sp. Dockery 1982 nut clam
R category
Brevinucula pseudopunctata n. sp. Dockery 1982 nut clam
R category
 Mytilida - Mytilidae
Septifer probolus n. sp.
Septifer probolus n. sp. mussel
R category
 Pectinida - Dimyidae
Dimya rufaripa
Dimya rufaripa Vokes 1979 scallop
C category
 Pectinida - Pectinoidae
Spondylus dumosus, "Pecten perplanus" = Pecten (Pecten) perplanus, "Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus
Spondylus dumosus Morton 1834 scallop
R category
"Pecten perplanus" = Pecten (Pecten) perplanus Morton 1833 scallop
R category
"Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus Aldrich 1903 scallop
C category
 Pectinida - Plicatulidae
Plicatula variplicata n. sp.
Plicatula variplicata n. sp. Dockery 1982 scallop
R category
 Ostreida - Ostreidae
Ostrea paroxis, Lopha vicksburgensis
Ostrea paroxis Lesueur 1829 oyster
R category
Lopha vicksburgensis Conrad 1848 oyster
R category
 Arcida - Arcidae
Scapharca invidiosa
Scapharca invidiosa Casey 1903 clam
A category
 Arcida - Glycymerididae
Glycymeris intercostata
Glycymeris intercostata Gabb 1860 clam
R category
 Cardiida - Cardiidae
Agnocardia glebosum, Nemocardium eocenense
Agnocardia glebosum Conrad 1848 cockle
R category
Nemocardium eocenense Meyer 1887 cockle
R category
 Cardiida - Kelliellidae
Kelliella rufaripa n. sp.
Kelliella rufaripa n. sp. clam
C category
 Cardiida - Chamidae
Chama pappiladerma n. sp.
Chama pappiladerma n. sp. Dockery 1982 jewel box
R category
 Cardiida - Veneridae
"Ventricolaria ucuttana" = Globivenus
"Ventricolaria ucuttana" = Globivenus venus clam
R category
 Pholadida - Corbulidae
Corbula rufaripa n. sp., Corbula engonata
Corbula rufaripa n. sp. clam
A category
Corbula engonata Conrad 1848 clam
R category
 Pholadida - Pholadidae
Jouannetia triquetra
Jouannetia triquetra clam
R category
 Poromyida - Spheniopsidae
Spheniopsis mississippiensis
 Poromyida - Cuspidariidae
Plectodon intastriata
Plectodon intastriata clam
R category
 Poromyida - Verticordiidae
Verticordia dalliana, Haliris quadrangularis
Verticordia dalliana clam
C category
Haliris quadrangularis clam
C category
 Lucinida - Lucinidae
Myrtea scopularis
Myrtea scopularis Casey 1903 clam
A category
 Carditida - Carditidae
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis Dall 1903 clam
R category
 Carditida - Astartidae
Astarte triangulata
Astarte triangulata Meyer 1886 clam
A category
Merisca aequistriata
  -
"Tellina lintea" = Merisca aequistriata
"Tellina lintea" = Merisca aequistriata Say 1824
R category