Route 23 roadcut (H76-31-4): Lutetian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
15 specimens
misc. bivalves, 15 species, 1 specimen each.
Bivalvia - Ostreida - Ostreidae
25 specimens
(Cubitostrea)
Bivalvia - Pectinida - Pectinidae
3 specimens
Bivalvia - Arcida - Arcidae
365 specimens
(Pachecoa)
Bivalvia - Carditida - Carditidae
Venericardia densata (Conrad 1845)
10 specimens
(Venericor)
Bivalvia - Cardiida - Veneridae
Pitar sp. Römer 1857
3 specimens
Bivalvia - Pholadida - Corbulidae
12 specimens
7 specimens
Bivalvia - Nuculanida - Nuculanidae
13 specimens
Bivalvia - Nuculida - Nuculidae
Nucula mauricensis (Harris 1919)
6 specimens
(Nucula)
Gastropoda
6 specimens
misc. gastropods, 6 species, 1 specimen each.
Gastropoda - Turritellidae
12 specimens
2 specimens
originally entered as "Turritella cf. rina"
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula dumosa Conrad 1834
1 specimen
Gastropoda - Naticidae
Neverita ? limula (Conrad 1833)
5 specimens
originally entered as "Neverita ? limula"
2 specimens
Gastropoda - Rostellariidae
Calyptraphorus sp. Conrad 1857
2 specimens
Gastropoda - Ficidae
2 specimens
Gastropoda - Neogastropoda - Olividae
Ancilla staminea Conrad 1832
1 specimen
punctulifera
Gastropoda - Neogastropoda - Melongenidae
11 specimens
Gastropoda - Neogastropoda - Buccinidae
Terebrifusus amoenus (Conrad 1833)
2 specimens
Pseudoliva vetusta (Conrad 1833)
3 specimens
24 specimens
Gastropoda - Neogastropoda - Volutidae
Athleta petrosus (Conrad 1833)
1 specimen
petrosus
14 specimens
Gastropoda - Neogastropoda - Cochlespiridae
2 specimens
originally entered as "cf. Ancystosyrinx sp."
6 specimens
Gastropoda - Neogastropoda - Borsoniidae
2 specimens
originally entered as "Bathytoma cf. nonplicata"
Gastropoda - Neogastropoda - Turridae
Eopleurotoma sp. Cossmann 1889
6 specimens
sp. A
Eopleurotoma sp. Cossmann 1889
1 specimen
sp. B
2 specimens
originally entered as "Eopleurotoma cf. gemmavia"
Protosurcula gabbi Conrad 1865
1 specimen
6 specimens
Gastropoda - Heterostropha - Mathildidae
2 specimens
Gastropoda - Opisthobranchiata - Retusidae
3 specimens
originally entered as "Retusa cf. galba"
see common names

Geography
Country:United States State/province:Alabama County:Choctaw
Coordinates: 31.8° North, 88.3° West (view map)
Paleocoordinates:35.5° North, 68.4° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Paleogene Epoch: Eocene
Stage: Lutetian 10 m.y. bin: Cenozoic 2
*Period:Tertiary
Key time interval: Lutetian
Age range of interval: 48.07 - 41.03 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Lisbon Member:Upper
Local section:H76-31 Local bed:4
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:gray,red or brown unlithified argillaceous siltstone
Environment:offshore Tectonic setting:passive margin
Geology comments: "massive gray blue silty-sand, weathering brown. diverse and well preserved fossil assemblage."
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection methods:bulk,mechanical,sieve,field collection
Reason for describing collection:paleoecologic analysis
Metadata
Also known as:H76-31
Database number:1439
Authorizer:T. Hansen Enterer:M. Sommers
Modifier:J. Alroy Research group:marine invertebrate
Created:1999-04-15 15:19:22 Last modified:2025-02-22 15:12:02
Access level:the public Released:2000-11-20 13:53:12
Creative Commons license:CC0
Reference information

Primary reference:
42. 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]