Barrytown, AL; Unit C', bag #2 (Eocene of the United States)

Also known as ACh-8-a2

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)

• at/near base of upper Lisbon Fm

correlates roughly with ACl-3a

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified, glauconitic, sandy marl

• sandy glauconitic marl

contains chunks of organic woody debris

Size class: mesofossils

Preservation: original aragonite, original calcite, original phosphate

Collection methods: bulk, mechanical, sieve,

• was picked and sorted by an undergrad; he likely missed some things

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 6788: authorized by Linda Ivany, entered by Linda Ivany on 17.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes all countable macrofossils
Bivalvia
 Arcida - Arcidae
Barbatia rhomboidella Lea 1833 clam
Pachecoa sp. Harris 1919 clam
Trinacria cuneus Conrad 1833 clam
 Pectinida - Pectinoidae
Eburneopecten sp. Conrad 1865 scallop
 Lucinida - Lucinidae
 Cardiida - Tellinidae
Macoma sp. Leach 1819 tellin clam
"Tellina raveneli" = Tellina (Arcopagia) raveneli Conrad 1846 tellin clam
Tellina leana tellin clam
 Cardiida - Cardiidae
 Cardiida - Erycinidae
"Mactropsis aequorea" = Erycina aequorea
"Mactropsis aequorea" = Erycina aequorea Conrad 1833 clam
 Cardiida - Veneridae
Pitar sp. Römer 1857 venus clam
Katherinella trinitatis Stenzel et al. 1957 venus clam
 Pholadida - Corbulidae
"Caryocorbula alabamiensis" = Corbula (Caryocorbula) alabamiensis Lea 1833 clam
Vokesula smithvillensis Harris 1919 clam
 Carditida - Carditidae
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda Lea 1833 clam
 Nuculanida - Nuculanidae
Calorhadia semenoides pointed nut clam
Calorhadia bella pointed nut clam
 Nuculida - Nuculidae
"Nucula magnifica" = Nucula (Nucula) magnifica
"Nucula magnifica" = Nucula (Nucula) magnifica Conrad 1833 nut clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium minutistriatum Gabb 1850 tusk shell
Gastropoda
 Cerithioidea - Turritellidae
Mesalia vetusta Conrad 1833 turret shell
Turritella sp. Lamarck 1799 turret shell
 Sorbeoconcha - Hipponicidae
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Sorbeoconcha - Ficidae
"Ficopsis texana" = Ficus, "Ficopsis penita" = Ficus
"Ficopsis texana" = Ficus fig shell
"Ficopsis penita" = Ficus fig shell
 Neogastropoda - Melongenidae
 Neogastropoda - Buccinidae
Pseudoliva vetusta Conrad 1833 true whelk
Terebrifusus sp. Conrad 1865 true whelk
Penion bellus Conrad 1833 true whelk
 Neogastropoda - Olividae
Ancilla staminea Conrad 1832 olive snail
 Neogastropoda - Muricidae
 Neogastropoda - Volutidae
"Athleta petrosus" = Athleta petrosa Conrad 1833 volute
 Neogastropoda - Borsoniidae
Microdrillia sp. Casey 1903 snail
 Neogastropoda - Turridae
"Protosurcula gabbi" = Protosurcula gabbii Conrad 1865 turrid
 Neogastropoda - Cochlespiridae
Cochlespira engonata Conrad 1865 snail
 Neogastropoda - Mitridae
Fusimitra polita mitre shell
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail