Barrytown, AL, across road, oyster bed 2' above ditch (Eocene of the United States)

Also known as ACh-8-d

Where: Choctaw County, Alabama (31.8° N, 88.3° W: paleocoordinates 32.5° N, 79.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Member (Lisbon Formation), Bartonian (41.3 - 38.0 Ma)

• lower part of upper Lisbon

stratigraphically above other ACh-8 collections

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, glauconitic, argillaceous, calcareous sandstone

• more poorly preserved than other ACh-8 collections - chalky aragonite

Size class: mesofossils

Preservation: original aragonite, original calcite

Collection methods: bulk, mechanical, sieve,

Primary reference: L. C. Ivany. 1997. Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University). 1-221 [L. Ivany/L. Ivany/A. Clement]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 2423: authorized by Linda Ivany, entered by Linda Ivany on 03.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes all countable macrofossils
unclassified
  -
Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
coral B
 Scleractinia - Dendrophylliidae
Endopachys maclurii Lea 1833 stony coral
 Scleractinia - Turbinoliidae
Turbinolia pharetra Lea 1833 stony coral
 Scleractinia - Caryophylliidae
Gymnolaemata
 Cheilostomata - Lunulitidae
Lunulitidae indet. Lagaaij 1952
lunulitid A
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
 Nuculanida - Nuculanidae
Calorhadia semenoides pointed nut clam
 Nuculida - Nuculidae
"Nucula magnifica" = Nucula (Nucula) magnifica
"Nucula magnifica" = Nucula (Nucula) magnifica Conrad 1833 nut clam
 Ostreida - Ostreidae
Cubitostrea sellaeformis Conrad 1832 oyster
 Pectinida - Anomiidae
Anomia sp. Linnaeus 1758 jingle
 Arcida - Glycymerididae
Glycymeris trigonella Conrad 1833 clam
 Arcida - Arcidae
Barbatia rhomboidella Lea 1833 clam
 Carditida - Carditidae
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda Lea 1833 clam
 Carditida - Crassatellidae
Crassinella minor Lea 1833 clam
 Cardiida - Tellinidae
Tellina leana tellin clam
 Cardiida - Mactridae
Spisula praetenuis Conrad 1833 clam
 Cardiida - Veneridae
 Cardiida - Ungulinidae
Diplodonta ungulina Conrad 1833 clam
 Pholadida - Corbulidae
"Caryocorbula alabamiensis" = Corbula (Caryocorbula) alabamiensis
"Caryocorbula alabamiensis" = Corbula (Caryocorbula) alabamiensis Lea 1833 clam
 Lucinida - Lucinidae
Linga pomilia Conrad 1833 clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
limpet #4
 Opisthobranchia - Retusidae
 Heterostropha - Ringiculidae
 Heterostropha - Mathildidae
Gegania antiquata snail
G. a. striata
 Neotaenioglossa - Calyptraeidae
Crepidula dumosa Conrad 1834 slipper shell
Crepidula lirata Conrad 1833 slipper shell
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
 Sorbeoconcha - Vitrinellidae
Vitrinella sp. Adams 1850 snail
 Sorbeoconcha - Hipponicidae
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail
C. v. nodovelatus - originally entered as "Calyptraphorus velatus"
 Neogastropoda - Marginellidae
 Neogastropoda - Muricidae
Murex fusates murex snail
"Murex vanuxemi" = Hexaplex (Hexaplex) vanuxemi Conrad 1865 murex snail
 Neogastropoda - Volutidae
Bullata semen, "Athleta petrosus" = Athleta petrosa
Bullata semen Lea 1833 volute
"Athleta petrosus" = Athleta petrosa Conrad 1833 volute
 Neogastropoda - Olividae
Ancilla staminea Conrad 1832 olive snail
 Neogastropoda - Borsoniidae
Cordieria biconica snail
originally entered as "Cordiera biconica"
Cordieria ludoviciana Vaughn 1896 snail
originally entered as "Cordiera ludoviciana"
 Neogastropoda - Turridae
 Neogastropoda - Melongenidae
 Neogastropoda - Buccinidae
 Neogastropoda - Fasciolariidae
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Vanikoroidea - Eulimidae
 Cerithioidea - Turritellidae
Mesalia vetusta Conrad 1833 turret shell
Turritella sp. Lamarck 1799 turret shell
all species
 Lepetellida - Fissurellidae
Diodora sp. Gray 1821 snail