Route 23 roadcut (H76-31-3) (Eocene of the United States)

Also known as H76-31

Where: Choctaw County, Alabama (31.8° N, 88.3° W: paleocoordinates 33.0° N, 77.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Member (Lisbon Formation), Lutetian (47.8 - 41.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, gray, sandy 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 1438: authorized by Thor Hansen, entered by Mike Sommers on 15.04.1999, edited by Jocelyn Sessa

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
coral sp. A
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
misc. bivalves, 15 species, 1 specimen each.
 Nuculanida - Nuculanidae
Calorhadia opulenta, Calorhadia bella
Calorhadia opulenta pointed nut clam
(Calorhadia)
Calorhadia bella pointed nut clam
 Nuculida - Nuculidae
"Nucula mauricensis" = Nucula (Nucula) mauricensis
"Nucula mauricensis" = Nucula (Nucula) mauricensis Harris 1919 nut clam
(Nucula)
 Cardiida - Veneridae
Pitar sp., Callista sp.
Pitar sp. Römer 1857 venus clam
Callista sp. Poli 1791 venus clam
 Cardiida - Mactridae
Spisula parilis
Spisula parilis Conrad 1833 clam
 Pholadida - Corbulidae
Vokesula smithvillensis, Corbula extenuata, Caryocorbula deusseni
Vokesula smithvillensis Harris 1919 clam
Corbula extenuata Dall 1898 clam
 Lucinida - Lucinidae
Lucinidae indet., Lucina pomilia
Lucinidae indet. Fleming 1828 clam
"Lucinid sp. A"
Lucina pomilia clam
(Cavilinga)
 Carditida - Carditidae
"Venericardia densata" = Venericardia (Venericor) densata
"Venericardia densata" = Venericardia (Venericor) densata Conrad 1845 clam
(Venericor)
 Arcida - Arcidae
Arcidae indet., Pachecoa decisa, Trinacria cuneus, Barbatia rhomboidella
Arcidae indet. Lamarck 1809 clam
originally entered as "Arcid sp."
Pachecoa decisa clam
(Pachecoa)
Trinacria cuneus Conrad 1833 clam
Barbatia rhomboidella Lea 1833 clam
(Plagiarca)
 Arcida - Glycymerididae
Glycymeris trigonella
Glycymeris trigonella Conrad 1833 clam
 Ostreida - Ostreidae
Cubitostrea sellaeformis
Cubitostrea sellaeformis Conrad 1832 oyster
 Pectinida - Pectinoidae
Eburneopecten cf. scintillatus
Eburneopecten cf. scintillatus Conrad 1854 scallop
originally entered as "Eburneopecten cf. scintillatus"
Gastropoda
 Opisthobranchia - Retusidae
Retusa galba, Rhizorus conradianus
Retusa galba snail
(Cylichnina)
 Neotaenioglossa - Calyptraeidae
Crepidula sp., "Calyptraea aperta" = Calyptraea (Trochita) aperta
Crepidula sp. Lamarck 1799 slipper shell
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
 Cerithioidea - Turritellidae
Turritella sp., Turritella ? nasuta, Mesalia cf. vetusta
Turritella sp. Lamarck 1799 turret shell
Turritella ? nasuta turret shell
originally entered as "Turritella ? nasuta"
Mesalia cf. vetusta Conrad 1833 turret shell
originally entered as "Mesalia cf. vetusta"
 Neogastropoda - Melongenidae
Levifusus mortoniopsis
 Neogastropoda - Buccinidae
Buccitriton texanum, Pseudoliva vetusta, Terebrifusus amoenus
Pseudoliva vetusta Conrad 1833 true whelk
Terebrifusus amoenus Conrad 1833 true whelk
 Neogastropoda - Volutidae
Athleta lisbonensis, Athleta haleanus
 Neogastropoda - Mitridae
Fusimitra polita
Fusimitra polita mitre shell
 Neogastropoda - Cancellariidae
Bonellitia parilis
 Neogastropoda - Olividae
Ancilla staminea
Ancilla staminea Conrad 1832 olive snail
punctilifera
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus
Calyptraphorus velatus Conrad 1833 snail
 Sorbeoconcha - Hipponicidae
Hipponix pygmaeus
 Sorbeoconcha - Naticidae
Polinices aratus, Neverita ? limula
Polinices aratus moon snail
Neverita ? limula Conrad 1833 moon snail
originally entered as "Neverita ? limula"
 Heterostropha - Mathildidae
Gegania antiquata
Gegania antiquata snail
striata
 Heterostropha - Ringiculidae
Ringicula trapaquara
Ringicula trapaquara snail
"(subsp. deusseni?)"
 Heterostropha - Acteonidae
"Actaeon idoneus" = Acteon idoneus
"Actaeon idoneus" = Acteon idoneus Conrad 1833 snail
originally entered as "Acteon idoneus"
 Heterostropha - Architectonicidae
"Architectonica scrobiculata" = Patulaxis scrobiculata
"Architectonica scrobiculata" = Patulaxis scrobiculata Conrad 1833 snail
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp.
Cadulus sp. Philippi 1844 tusk shell