AWa-2 Gosport (Eocene of the United States)

Where: Washington County, Alabama (31.1° N, 87.9° W: paleocoordinates 31.8° N, 79.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Gosport Sand Formation (Claiborne Group), Bartonian (41.3 - 38.0 Ma)

• About 15 to 18 feet of Gosport Sand is exposed, overlain by the lower part of the Moodys Branch Formation containing Periarchus lyelli, and underlain by the top part of the Lisbon Formation containing Cubitostrea sellaeformis. The upper part of the Gosport Sand is exposed to best advantage and contains abundant well preserved shells of a diversified molluscan fauna.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; unlithified, glauconitic, sandy sandstone

• None.

Size class: mesofossils

Primary reference: L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13(1):1-602 [M. Patzkowsky/K. Layou/P. Mannion]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 81282: authorized by Arnold Miller, entered by Jocelyn Sessa on 16.06.2008, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Scleractinia - Fungiidae
 Scleractinia - Flabellidae
Flabellum cuneiforme Lonsdale 1845 stony coral
 Scleractinia - Dendrophylliidae
Endopachys maclurii Lea 1833 stony coral
Gastropoda
 Trochoidea - Solariellidae
Solariella stalagmium Conrad 1833 snail
 Epitonioidea - Epitoniidae
Cirsotrema nassulum Conrad 1854 wentletrap
 Neotaenioglossa - Calyptraeidae
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
Crepidula lirata Conrad 1833 slipper shell
 Cerithioidea - Turritellidae
Mesalia vetusta Conrad 1833 turret shell
Turritella ghigna turret shell
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail
 Neogastropoda - Olivellidae
Agaronia alabamensis Conrad 1833 snail
 Neogastropoda - Olividae
Ancilla staminea Conrad 1832 olive snail
 Neogastropoda - Buccinidae
cf. Bolis lisboa true whelk
Lacinia alveata Conrad 1833 true whelk
Pseudoliva vetusta Conrad 1833 true whelk
1 Pseudoliva vetusta carinata
 Neogastropoda - Fasciolariidae
 Neogastropoda - Clavatulidae
 Neogastropoda - Turridae
Coronia childreni Lea 1833 turrid
 Neogastropoda - Muricidae
"Murex engonatus" = Hexaplex (Hexaplex) engonatus
"Murex engonatus" = Hexaplex (Hexaplex) engonatus Conrad 1833 murex snail
 Neogastropoda - Volutidae
Caricella pyruloides Conrad 1832 volute
Athleta sp. Conrad 1853 volute
"Athleta petrosus" = Athleta petrosa Conrad 1833 volute
 Sorbeoconcha - Naticidae
Polinices sp., ""Natica" semilunata" = Natica (Naticarius) semilunata, "Euspira leana" = Natica semilunata leana
Polinices sp. Monfort 1810 moon snail
""Natica" semilunata" = Natica (Naticarius) semilunata Lea 1833 moon snail
"Euspira leana" = Natica semilunata leana Palmer 1937 moon snail
 Sorbeoconcha - Vitrinellidae
 Heterostropha - Architectonicidae
Architectonica ornata Harris and Palmer 1947 sundial
Architectonica elaborata Conrad 1833 sundial
 Opisthobranchia - Retusidae
Bivalvia
 Arcida - Glycymerididae
cf. Glycymeris idonea Conrad 1865 clam
Glycymeris staminea Conrad 1833 clam
 Pectinida - Pectinoidae
Chlamys spp. Röding 1798 scallop
Chlamys deshayesii Lea 1833 scallop
 Ostreida - Pteriidae
Pteria limula Conrad 1833 pearl oyster
 Ostreida - Ostreidae
"Alectryonia johnsoni" = Ostrea (Alectryonia) oyster
 Lucinida - Lucinidae
Eomiltha pandata Conrad 1833 clam
Eophysema subvexa Conrad 1833 clam
Linga pomilia Conrad 1833 clam
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
"Caryocorbula alabamiensis" = Corbula (Caryocorbula) alabamiensis Lea 1833 clam
 Cardiida - Sportellidae
 Cardiida - Veneridae
Callista perovata Conrad 1833 venus clam
"Callista mortoni" = Costacallista mortoni Conrad 1834 venus clam
Callista aequorea Conrad 1833 venus clam
 Cardiida - Ungulinidae
Diplodonta ungulina Conrad 1833 clam
 Cardiida - Tellinidae
Tellina alta Conrad 1833 tellin clam
cf. Macoma danai Harris 1919 tellin clam
 Cardiida - Psammobiidae
 Carditida - Astartidae
Lirodiscus tellinoides Conrad 1833 clam
 Carditida - Carditidae
"Venericardia alticostata" = Venericardia (Claibornicardia) alticostata, "Venericardia claiboplata" = Venericardia carolinensis, "Venericardia rotunda" = Venericardia (Rotundicardia) rotunda
"Venericardia alticostata" = Venericardia (Claibornicardia) alticostata Conrad 1833 clam
"Venericardia claiboplata" = Venericardia carolinensis Conrad 1848 clam
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda Lea 1833 clam
 Carditida - Crassatellidae
"Crassatella alta" = Crassatella uvasana Conrad 1855 clam
Bathytormus protextus Conrad 1832 clam
 Nuculida - Nuculidae
"Nucula ovula" = Nucula (Nucula) ovula
"Nucula ovula" = Nucula (Nucula) ovula Lea 1833 nut clam
Scaphopoda
 Dentaliida - Dentaliidae
Echinoidea
 Clypeasteroida - Protoscutellidae
Periarchus lyelli Conrad 1834 sand dollar
Periarchus lyelli subsp.
Gnathostomata
  -
Chondrichthyes batoides cartilaginous fish
Ray tooth
Chondrichthyes
 Lamniformes - Mitsukurinidae
Striatolamia macrota Agassiz 1838 goblin shark