PRI 15 (Eocene of the United States)

Where: Grant County, Louisiana (31.8° N, 92.3° W: paleocoordinates 32.8° N, 83.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Moodys Branch Formation (Jackson Group), Bartonian (41.3 - 38.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Collection methods: Collected by Leslie Hubricht, September 9, 1962. Donated October 10, 1962. Acc. No. 452, some specimens catalogued, No.S 285H-291H.

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 92303: authorized by Jocelyn Sessa, entered by Laurie Eccles on 05.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Heterostropha - Architectonicidae
"Architectonica (Stellaxis) alveata" = Architectonica (Stellaxis) alveatum
"Architectonica (Stellaxis) alveata" = Architectonica (Stellaxis) alveatum Conrad 1833 sundial
Architectonica (Stellaxis) alveata A
 Neotaenioglossa - Calyptraeidae
Calyptraea (Trochita) aperta Solander 1766 slipper shell
 Sorbeoconcha - Capulidae
Capulus americanus Conrad 1854 snail
 Sorbeoconcha - Rostellariidae
 Sorbeoconcha - Strombidae
Platyoptera extenta Conrad 1854 true conch
 Neogastropoda - Muricidae
Hexaplex (Hexaplex) marksi Harris 1894 murex snail
Pterynotus (Pterynotus) weisbordi Harris and Palmer 1947 mustached bat
 Neogastropoda - Volutidae
Athleta symmetricus Conrad 1854 volute
Caricella subangulata Conrad 1854 volute
Lapparia dumosa Conrad 1854 volute
Including Lapparia dumosa exiqua
 Neogastropoda - Turbinellidae
"Latirus humilior" = Turbinella humilior
"Latirus humilior" = Turbinella humilior Meyer 1885 snail
Including Latirus humilior cognatus and Latirus humilior urbanus
 Neogastropoda - Costellariidae
Conomitra jacksonensis Cooke 1926 ribbed mitre
 Neogastropoda - Fasciolariidae
Papillina dumosa Conrad 1854 snail
Tritonatractus pearlensis Aldrich 1885 snail
Including Tritonoatractus pearlensis montgomeriensis [entered as Tritonoatractus pearlensis]
 Neogastropoda - Nassariidae
"Tritiaria magnocostata" = Nassarius (Tritiaria)
"Tritiaria magnocostata" = Nassarius (Tritiaria) snail
 Neogastropoda - Buccinidae
Pseudoliva vetusta Conrad 1833 true whelk
Including Pseudoliva vetusta perspectiva
 Sorbeoconcha - Vermetidae
Serpulorbis chavani Harris and Palmer 1947 worm shell
 Sorbeoconcha - Naticidae
Natica permunda Conrad 1854 moon snail
Euspira jacksonensis Harris and Palmer 1947 moon snail
Anthozoa
 Scleractinia - Rhizangiidae
Astrangia expansa Vaughan 1900 stony coral