Doby's Bluff contact of beds 1 and 2 (Eocene of the United States)

Also known as MCl-6-b

Where: Clarke County, Mississippi (32.0° N, 88.7° W: paleocoordinates 33.3° N, 77.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: late zone, Doby's Bluff Tongue Member (Kosciusko Formation), Lutetian (47.8 - 41.3 Ma)

• thin shelly bed above main shell bed - probable storm bed

• bed-level stratigraphic resolution

Environment/lithology: interdistributary bay; unlithified, graded, glauconitic, argillaceous sandstone

• muddy glauconitic sand

probably storm bed

diverse fauna, but may be restricted marine - better listed as offshore??

Size class: mesofossils

Preservation: original aragonite, original calcite, original phosphate

Collection methods: bulk,

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 2415: authorized by Linda Ivany, entered by Linda Ivany on 03.07.1999, edited by Jocelyn Sessa

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes all countable macrofossils but bivalves, does include oysters
Gymnolaemata
 Cheilostomata - Lunulitidae
Lunulitidae indet. Lagaaij 1952
lunulitid A
Gastropoda
 Opisthobranchia - Retusidae
 Trochoidea - Trochidae
 Heterostropha - Pyramidellidae
 Heterostropha - Architectonicidae
Architectonica elaborata Conrad 1833 sundial
 Heterostropha - Acteonidae
"Actaeon pomilius" = Acteon, "Actaeon idoneus" = Acteon idoneus
"Actaeon pomilius" = Acteon snail
originally entered as "Acteon pomilius"
"Actaeon idoneus" = Acteon idoneus Conrad 1833 snail
originally entered as "Acteon idoneus"
 Heterostropha - Mathildidae
Gegania antiquata snail
G. a. striata
 Sorbeoconcha - Vitrinellidae
 Sorbeoconcha - Hipponicidae
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
Sinum inconstans moon snail
 Neogastropoda - Cancellariidae
Bonellitia sp. Jousseaume 1887 snail
spp A
Trigonostoma babylonicum Lea 1833 snail
 Neogastropoda - Fasciolariidae
Latirus moorei Gabb 1860 snail
 Neogastropoda - Buccinidae
Pseudoliva vetusta Conrad 1833 true whelk
 Neogastropoda - Melongenidae
 Neogastropoda - Columbellidae
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis
"Mitrella (Columbellopsis) mississippiensis" = Columbellopsis snail
Mitrella (Columbellopsis)
 Neogastropoda - Borsoniidae
Microdrillia sp. Casey 1903 snail
 Neogastropoda - Turridae
Michela trabeatoides Harris 1895 turrid
Eosurcula moorei Gabb 1860 turrid
 Neogastropoda - Cochlespiridae
Cochlespira engonata Conrad 1865 snail
 Neogastropoda - Terebridae
Hastula houstonia auger snail
 Neogastropoda - Conidae
Conus sauridens Conrad 1833 cone shell
 Neogastropoda - Volutidae
Bullata semen, "Athleta petrosus" = Athleta petrosa
Bullata semen Lea 1833 volute
"Athleta petrosus" = Athleta petrosa Conrad 1833 volute
 Neogastropoda - Muricidae
Murex fusates murex snail
"Murex vanuxemi" = Hexaplex (Hexaplex) vanuxemi Conrad 1865 murex snail
 Sorbeoconcha - Ficidae
"Ficopsis texana" = Ficus
"Ficopsis texana" = Ficus fig shell
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail
C. v. nodovelatus - originally entered as "Calyptraphorus velatus"
 Vanikoroidea - Eulimidae
Eulima extremis Aldrich 1911 snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
all species
Bivalvia
 Cardiida - Semelidae
Abra nitens Lea 1833 abra
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
 Pholadida - Corbulidae
"Caryocorbula alabamiensis" = Corbula (Caryocorbula) alabamiensis Lea 1833 clam
 Carditida - Carditidae
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda
"Venericardia rotunda" = Venericardia (Rotundicardia) rotunda Lea 1833 clam
 Ostreida - Ostreidae
"Cubitostrea divaricata" = Cubitostrea (Cubitostrea) divaricata
"Cubitostrea divaricata" = Cubitostrea (Cubitostrea) divaricata Lea 1833 oyster
 Nuculida - Nuculidae
"Nucula mauricensis" = Nucula (Nucula) mauricensis
"Nucula mauricensis" = Nucula (Nucula) mauricensis Harris 1919 nut clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
Anthozoa
 Scleractinia - Turbinoliidae
Turbinolia pharetra Lea 1833 stony coral