MGS 63 (Eocene of the United States)

Where: Jasper County, Mississippi (32.1° N, 89.0° W)

• Paleocoordinates: 36.0° N, 71.6° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cook Mountain Formation (Claiborne Group), Bartonian (41.3 - 38.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Primary reference: D. T. Dockery. 1980. Invertebrate Macropaleontolgy of the Clarke County Mississippi Area. Bulletin - Mississippi Geological, Economic and Topographic Survey 122 [M. Kosnik/M. Kosnik/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99734: authorized by Jocelyn Sessa, entered by Laurie Eccles on 19.11.2010

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Neogastropoda - Borsoniidae
Cordiera biconica newtonensis
Polyplacophora
 Chitonida - Chitonidae
Chiton sp.
Chiton sp. Linnaeus 1758 chiton
Gastropoda
 Opisthobranchiata - Umbraculidae
cf. Umbraculum planulatum
 Sorbeoconcha - Cassidae
"Phalium brevicostatum" = Cassis brevicostatus
"Phalium brevicostatum" = Cassis brevicostatus Conrad 1834 snail
 Neogastropoda - Turridae
Hemisurcula hicoricola, Eopleurotoma gemmavia
 Neogastropoda - Borsoniidae
Pseudotoma ? sp.
Pseudotoma ? sp. Bellardi 1875 snail
 Neogastropoda - Marginellidae
Marginella (Dentimargo) constrichtoides, "Cryptospira (Euryentome) silabra" = Marginella silabra
"Cryptospira (Euryentome) silabra" = Marginella silabra Palmer 1937 margin shell
 Neogastropoda - Muricidae
Hexaplex (Hexaplex) vanuxemi, Hexaplex (Hexaplex) engonatus, Typhis (Typhina) palmerae
Hexaplex (Hexaplex) vanuxemi Conrad 1865 murex snail
Hexaplex (Hexaplex) engonatus Conrad 1833 murex snail
Typhis (Typhina) palmerae Gertman 1969 murex snail
 Neogastropoda - Volutidae
Lyrischapa harrisi, Athleta "sp. B"
Lyrischapa harrisi Aldrich 1911 volute
Athleta "sp. B" Conrad 1853 volute
 Neogastropoda - Columbellidae
Mitrella (Bastropia) bastropensis, "Mitrella (Columbellopsis) mississippiensis" = Columbellopsis
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis snail
 Neogastropoda - Olividae
Agaronia alabamensis
Agaronia alabamensis Conrad 1833 olive snail
 Sorbeoconcha - Ficidae
"Ficopsis texana" = Ficus
"Ficopsis texana" = Ficus fig shell
 Epitonioidea - Epitoniidae
Cirsotrema (Coroniscala) nassulum
Cirsotrema (Coroniscala) nassulum Conrad 1854 wentletrap
 Cerithioidea - Potamididae
Potamides ? sp.
Potamides ? sp. Brongniart 1810 horn snail
 Vanikoroidea - Eulimidae
Melanella sp.
Melanella sp. Bowdich 1822 snail
Bivalvia
 Arcida - Arcidae
Barbatia (Acar) aspera
Barbatia (Acar) aspera Conrad 1854 miniature ark
 Cardiida - Chamidae
Chama harrisi, Chama (Chama) monroensis
Chama harrisi jewel box
Chama (Chama) monroensis Aldrich 1903 jewel box
 Carditida - Crassatellidae
cf. Crassatella (Crassatella) negreetensis, Crassatella texalta
Crassatella texalta Harris 1895 clam
 Carditida - Carditidae
Glyptoactis (Claibornicardia) alticostata