PBDB Collection

Route 23 roadcut (H76-31-4) (Eocene of the United States)

Also known as H76-31

Where: Choctaw County, Alabama (31.8° N, 88.3° W)

• Paleocoordinates: 35.5° N, 68.4° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Member (Lisbon Formation), Lutetian (48.1 - 41.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, gray, argillaceous siltstone

• "massive gray blue silty-sand, weathering brown. diverse and well preserved fossil assemblage."

Collection methods: bulk, mechanical, sieve,

Primary reference: T. A. Hansen. 1978. Ecological control of evolutionary rates in Paleocene - Eocene marine molluscs. Ph.D. Thesis, Yale University 1-310 [T. Hansen/M. Sommers/A. Clement]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 1439: authorized by Thor Hansen, entered by Mike Sommers on 15.04.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Bivalvia
-	Bivalvia indet. Bivalvia indet. Linnaeus 1758 clam misc. bivalves, 15 species, 1 specimen each.
Nuculida - Nuculidae	"Nucula mauricensis" = Nucula (Nucula) mauricensis "Nucula mauricensis" = Nucula (Nucula) mauricensis Harris 1919 nut clam (Nucula)
Nuculanida - Nuculanidae	Calorhadia bella Calorhadia bella pointed nut clam
Arcida - Arcidae	Pachecoa decisa Pachecoa decisa clam (Pachecoa)
Ostreida - Ostreidae	Cubitostrea sellaeformis Cubitostrea sellaeformis Conrad 1832 oyster (Cubitostrea)
Pectinida - Pectinoidae	Eburneopecten scintillatus Eburneopecten scintillatus Conrad 1854 scallop
Carditida - Carditidae	"Venericardia densata" = Venericardia (Venericor) densata "Venericardia densata" = Venericardia (Venericor) densata Conrad 1845 clam (Venericor)
Cardiida - Veneridae	Pitar sp. Pitar sp. Römer 1857 venus clam
Pholadida - Corbulidae	Caryocorbula deusseni, Vokesula smithvillensis Caryocorbula deusseni clam Vokesula smithvillensis Harris 1919 clam
Gastropoda
-	Gastropoda indet. Gastropoda indet. Cuvier 1795 snail misc. gastropods, 6 species, 1 specimen each.
Heterostropha - Mathildidae	Gegania antiquata Gegania antiquata snail
Opisthobranchiata - Retusidae	Retusa cf. galba Retusa cf. galba snail originally entered as "Retusa cf. galba"
Neotaenioglossa - Calyptraeidae	Crepidula dumosa Crepidula dumosa Conrad 1834 slipper shell
Cerithioidea - Turritellidae	Turritella nasuta, "Turritella cf. rina" = Haustator rina Turritella nasuta turret shell "Turritella cf. rina" = Haustator rina turret shell originally entered as "Turritella cf. rina"
Sorbeoconcha - Ficidae	"Ficopsis penita" = Ficus "Ficopsis penita" = Ficus fig shell
Neogastropoda - Melongenidae	Levifusus mortoniopsis Levifusus mortoniopsis snail
Neogastropoda - Cochlespiridae	Cochlespira engonata, "cf. Ancistrosyrinx sp." = Cochlespira Cochlespira engonata Conrad 1865 snail "cf. Ancistrosyrinx sp." = Cochlespira Conrad 1865 snail originally entered as "cf. Ancystosyrinx sp."
Neogastropoda - Borsoniidae	Bathytoma cf. nonplicata Bathytoma cf. nonplicata snail originally entered as "Bathytoma cf. nonplicata"
Neogastropoda - Turridae	Eopleurotoma sp., Eopleurotoma sp., Eopleurotoma cf. gemmavia, Eosurcula moorei, "Protosurcula gabbi" = Protosurcula gabbii Eopleurotoma sp. Cossmann 1889 turrid sp. A Eopleurotoma sp. Cossmann 1889 turrid sp. B Eopleurotoma cf. gemmavia turrid originally entered as "Eopleurotoma cf. gemmavia" Eosurcula moorei Gabb 1860 turrid "Protosurcula gabbi" = Protosurcula gabbii Conrad 1865 turrid
Neogastropoda - Buccinidae	Pseudoliva vetusta, Buccitriton texanum, Terebrifusus amoenus Pseudoliva vetusta Conrad 1833 true whelk Buccitriton texanum true whelk Terebrifusus amoenus Conrad 1833 true whelk
Neogastropoda - Olividae	Ancilla staminea Ancilla staminea Conrad 1832 olive snail punctulifera
Neogastropoda - Volutidae	Athleta haleanus, "Athleta petrosus" = Athleta petrosa Athleta haleanus volute "Athleta petrosus" = Athleta petrosa Conrad 1833 volute petrosus
Sorbeoconcha - Rostellariidae	Calyptraphorus sp. Calyptraphorus sp. Conrad 1857 snail
Sorbeoconcha - Naticidae	Sinum beatricae, Neverita ? limula Sinum beatricae moon snail Neverita ? limula Conrad 1833 moon snail originally entered as "Neverita ? limula"