Hannatoma A: Carbonera Fm: El Cerrito, Columbia (Durham) (Eocene of Colombia)

Where: Colombia (6.8° N, 73.6° W: paleocoordinates 4.5° N, 66.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Carbonera Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

Environment/lithology: marine

• This assemblage may be indicative of somewhat brackish water.

Size class: macrofossils

Primary reference: J. W. Durham, A.N. Dusenbury, Jr, H.D. Hedberg, L. Kehrer, J.G. Marks, R.M. Stainforth, and B. Stone. 1949. The age of the Hannatoma mollusk fauna of South America; a symposium. Journal of Paleontology 23(2):145-160 [L. Ivany/C. Visaggi/C. Visaggi]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 42787: authorized by Linda Ivany, entered by Christy Visaggi on 05.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Pachychilidae
"Pseudofaunus sp." = Faunus (Pseudofaunus)
"Pseudofaunus sp." = Faunus (Pseudofaunus) Olsson 1931 snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Cerithioidea - Potamididae
Hannatoma emendorferi Olsson 1931 horn snail
Harrisianella sp. Olson 1929 horn snail
Lagunitus ? sp. Olsson 1929 horn snail
 Neogastropoda - Olividae
Oliva sp. Bruguière 1789 olive snail
 Neogastropoda - Melongenidae
Melongena "sp. A" Schumacher 1817 snail
Melongena "sp. B" Schumacher 1817 snail
 Sorbeoconcha - Naticidae
Polinices sp. Monfort 1810 moon snail
Crommium palmerae Clark and Durham 1946 moon snail
 Sorbeoconcha - Triforidae
Cerithiella sp. Verrill 1882 snail
Bivalvia
 Arcida - Arcidae
"Arca (Argina) samanensis" = Arginella samanensis
"Arca (Argina) samanensis" = Arginella samanensis Olsson 1929 clam
 Pectinida - Anomiidae
Anomia sp. Linnaeus 1758 jingle
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Lucinida - Lucinidae
Phacoides sp. Blainville 1825 clam
 Cardiida - Veneridae
Pitar spp. Römer 1857 venus clam