Hannatoma D: Carbonera Fm: El Cerrito, Columbia (Hedberg) (Eocene of Colombia)

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

• coordinate based on nearby landmark

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

Environment/lithology: marine

• The collection does not form a typical marine fauna, but probably an estuary or similar brackish environment.

Size class: macrofossils

Collection methods: These fossils were collected by the Venezuela Gulf Oil Company and studied by H.S. Ladd.

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 42790: authorized by Linda Ivany, entered by Christy Visaggi on 05.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Taxonomic list was compiled from text.
Gastropoda
 Cerithioidea - Diastomatidae
Diastoma sp. Deshayes 1850 snail
 Cerithioidea - Pachychilidae
Melanatria "sp. A" Bowdich 1822 snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Turritella "sp. C" Lamarck 1799 turret shell
 Cerithioidea - Potamididae
Telescopium sp. Monfort 1810 horn snail
 Sorbeoconcha - Strombidae
 Neogastropoda - Terebridae
Terebra "sp. B" Bruguière 1789 auger snail
 Sorbeoconcha - Naticidae
"Polinices (Neverita) uamenensis" = Neverita, Natica sp.
"Polinices (Neverita) uamenensis" = Neverita moon snail
Natica sp. Scopoli 1777 moon snail
Bivalvia
 Pectinida - Plicatulidae
Plicatula ? sp. Lamarck 1801 scallop
 Ostreida - Ostreidae
Ostrea cf. inca Woods 1922 oyster
 Pholadida - Myidae
Mya (Raetomya) "sp. A" Linnaeus 1758 softshell clam
 Cardiida - Corbiculidae
Corbicula sp. Megerle 1811 clam
 Cardiida - Cyrenidae
Cyrena sp. Lamarck clam