El Carmen, 6 mi. SW of (Horizon F) (Eocene of Colombia)

Where: Colombia (9.8° N, 75.2° W: paleocoordinates 7.2° N, 67.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bartonian (41.3 - 38.0 Ma)

• STRATIGRAPHIC RELATIONS: From a unit referred to as the Carmen section of the Eocene, for which lithostratigraphic relations are unclear. AGE: Eocene, though not clear; age assignment reassigned based on the known biostratigraphic ranges of constituent taxa in more recent literature; here assigned to Bartonian (early Middle Eocene), but it is acknowledged that considerable constituent taxa have known age ranges extending (but not exclusive) to the Late Eocene and Ypresian. STRATIGRAPHIC POSITION: From Horizon F of the Carmen section.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, concretionary shale and lithified, concretionary sandstone

• ENVIRONMENT: Shallow marine siliciclastic.
• SPECIFIC LITHOLOGY: Concretionary sandy shale, sandstone. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Anderson

• COLLECTOR: F. Anderson, c. 1920's. REPOSITORY: California Academy of Sciences.

Primary reference: F. M. Anderson. 1928. Notes on Lower Tertiary deposits of Colombia and their molluscan and foraminiferal fauna. Proceedings of the California Academy of Sciences 17(1):1-29 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88279: authorized by Austin Hendy, entered by Austin Hendy on 06.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropods, bivalves and forams. NOMENCLATURE: Authoritative publication, with antiquated nomenclature, but with species-resolution identifications.
Cephalopoda
 Nautilida - Aturiidae
Aturia colombiana n. sp. Anderson 1928 nautiloid
Gastropoda
 Neogastropoda - Buccinidae
Phos sp. Monfort 1810 true whelk
Pseudoliva sp. Swainson 1840 true whelk
Bivalvia
 Ostreida - Ostreidae
"Ostrea alabamiensis" = Crassostrea alabamiensis
"Ostrea alabamiensis" = Crassostrea alabamiensis Lea 1833 oyster
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
 Cardiida - Veneridae
"Crassinella (Gouldia) minuta n. sp." = Gouldia minuta
"Crassinella (Gouldia) minuta n. sp." = Gouldia minuta Anderson 1928 venus clam
 Cardiida - Cardiidae
 Carditida - Carditidae
Venericardia (Glyptoactis) carmenensis Clark and Durham 1946 clam
Foraminifera
 Nummulitacea - Nummulitidae
Nummulites carmenensis n. sp. Anderson 1928