PRI 2254 (Eocene of the United States)

Where: Newton County, Mississippi (32.3° N, 89.2° W: paleocoordinates 33.0° N, 80.2° 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: offshore; unlithified, sandy marl

• Environment from PBDB col 2436
• "Likely Archusa (LCI)".

•lithology from PBDB col. # 2436

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 90642: authorized by Jocelyn Sessa, entered by Laurie Eccles on 11.08.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

 Diptera - Xylophagidae
 Arcida - Arcidae
 Pectinida - Plicatulidae
Plicatula filamentosa Conrad 1833 scallop
Plicatula filamentosa planata
 Ostreida - Gryphaeidae
"Pycnodonta johnsoni" = Pycnodonte
"Pycnodonta johnsoni" = Pycnodonte oyster
 Ostreida - Ostreidae
 Pholadida - Corbulidae
 Protobranchia - Nuculanidae
Nuculana wautubbeana pointed nut clam
 Ptenoglossa - Epitoniidae
 Cephalaspidea - Retusidae
 Triphoroidea - Triforidae
Cerithiella "sp. B" Verrill 1882 snail
 Triphoroidea - Cerithiopsidae
 Neogastropoda - Columbellidae
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis snail
 Neogastropoda - Marginellidae
 Neogastropoda - Muricidae
 Neogastropoda - Turridae
Scobinella newtonensis Aldrich 1911 turrid
Trypanotoma terebriformis turrid
Trypanotoma. terebriformis curta
Surculoma (Volutapex) subequalis turrid
Surculoma (Volutapex) subequalis var.
? Surculoma (? Volutapex) kellogii turrid
? Surculoma ?( Volutapex) kellogii var.
Coronia childreni Lea 1833 turrid
Coronia childreni novoppidi
Eopleurotoma cainei turrid
Eopleurotoma cainei var.B
Eopleurotoma carya turrid
Eopleurotoma carya and Eopleurotoma carya hicoria
 Neogastropoda - Borsoniidae
Microdrillia "sp. A" Casey 1903 snail
"Cordiera biconica" = Cordieria snail
Cordiera biconica newtonensis
Cordiera ludoviciana Vaughn 1896 snail
Cordiera ludoviciana mississippiensis
 Naticoidea - Naticidae
Sinum inconstans moon snail
Sigatica boettgeri Meyer and Aldrich 1886 moon snail
 Architectonicoidea - Architectonicidae
Architectonica (Architectonica) bellistriata Conrad 1854 sundial
Architectonica (Architectonica) bellistriata newtonensis
 Fissurelloidea - Fissurellidae
"Puncturella (Altrix) altior" = Altrix
"Puncturella (Altrix) altior" = Altrix snail
 Gadilida - Gadilidae
Cadulus (Polyschides) newtonensis Meyer and Aldrich 1886 tusk shell
 Scleractinia - Dendrophylliidae
Endopachys lonsdalei1 Vaughan 1900 stony coral
 Scleractinia - Caryophylliidae
Paracyathus bellus1 Vaughan 1900 stony coral
Platytrochus stokesi1 stony coral