PRI 741 (Eocene of the United States)

Where: Ouachita County, Louisiana (32.5° N, 92.1° W: paleocoordinates 33.5° N, 83.2° W)

• 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: K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98787: authorized by Jocelyn Sessa, entered by Laurie Eccles on 20.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Carditida - Crassatellidae
Bathytormus clarkensis clam
Bathytormus clarkensis ludovicianus
Gastropoda
 Ptenoglossa - Epitoniidae
Aciculiscala jacobi Palmer 1937 wentletrap
Acirsa (Hemiacirsa) whitneyi Palmer 1937 wentletrap
 Cephalaspidea - Retusidae
 Cephalaspidea - Cylichnidae
Abderospira stewarti Palmer 1937 snail
 Neogastropoda - Columbellidae
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis, Mitrella (Clinurella) casteri
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis snail
 Neogastropoda - Buccinidae
Pseudoliva vetusta Conrad 1833 true whelk
Pseudoliva vetusta carinata
Buccitriton sagenum Conrad 1833 true whelk
 Neogastropoda - Melongenidae
Levifusus "sp. G" Conrad 1865 snail
Levifusus mortoniopsis snail
Levifusus mortoniopsis carexus
 Neogastropoda - Fasciolariidae
 Neogastropoda - Cancellariidae
Trigonostoma panones snail
including Trigonostoma panones smithvillense and Trigonostoma panones juniperum
 Neogastropoda - Mitridae
 Neogastropoda - Volutidae
 Neogastropoda - Costellariidae
Conomitra texana ribbed mitre
 Neogastropoda - Muricidae
Hexaplex (Hexaplex) silvaticus Palmer 1937 murex snail
 Neogastropoda - Turridae
Pyramimitra terebraeformis Conrad 1833 turrid
Michela trabeatoides Harris 1895 turrid
 Stromboidea - Strombidae
"Ectinochilus texanum" = Rimella
"Ectinochilus texanum" = Rimella true conch
 Ficoidea - Ficidae
Ficopsis penita fig shell
 Vanikoroidea - Eulimidae
Niso "sp. D" Risso 1826 snail
 Naticoidea - Naticidae
Natica "spp. A" Scopoli 1777 moon snail
Polinices aratus moon snail
 Tonnoidea - Ranellidae
"Distorsio (Personella) septemdentata" = Sassia (Personella) septemdentata
"Distorsio (Personella) septemdentata" = Sassia (Personella) septemdentata Gabb 1860 triton shell
 Tonnoidea - Cassidae
Galeodea planotecta Meyer and Aldrich 1886 snail
 Sorbeoconcha - Turritellidae
"Turritella rina" = Haustator rina
"Turritella rina" = Haustator rina turret shell
 Heterostropha - Acteonidae
Acteon pomilius snail
Acteon pomilius punctatus
Acteon idoneus Conrad 1833 snail
 Heterostropha - Ringiculidae
Ringicula trapaquara snail
Ringicula trapaquara deusseni
 Heterostropha - Mathildidae
Gegania antiquata snail
Gegania antiquata striata
 Tectibranchia - Scaphandridae
 Pyramidelloidea - Pyramidellidae
 Architectonicoidea - Architectonicidae
"Architectonica (Stellaxis) alveata" = Architectonica (Stellaxis) alveatum Conrad 1833 sundial
Architectonica (Granosolarium) meekana sundial
Architectonica (Granosolarium) meekana splendida
 Turbinoidea - Turbinidae
Solariorbis "sp. A" Conrad 1865 snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "sp. D" Linnaeus 1758 tusk shell
 Gadilida - Gadilidae
Cadulus "sp. A" Philippi 1844 tusk shell
Cephalopoda
  -
Belosaepia uncinata Palmer 1937