San Juan de Rio Seco (Eocene of Colombia)

Where: Colombia (10.6° N, 73.2° W: paleocoordinates 8.1° N, 64.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Eocene (56.0 - 33.9 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. STRATIGRAPHIC POSITION: From not far above coal veins.

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; poorly lithified, gray shale

• ENVIRONMENT: Estuarine.
• SPECIFIC LITHOLOGY: Dusky gray shale. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by McKloskey & Wark

• COLLECTOR: D. McKloskey & T. Wark, 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 88281: 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.
Show authors, comments, and common names
Gastropoda
 Vanikoroidea - Eulimidae
Melanella karsteni n. sp.
Melanella karsteni n. sp. Anderson 1928 snail
 Sorbeoconcha - Naticidae
Ampullaria guaduasensis n. sp.
Ampullaria guaduasensis n. sp. Anderson 1928 moon snail
Bivalvia
 Pholadida - Corbulidae
"Corbula hettneri n. sp." = Pachydon hettneri, "Corbula scheibei n. sp." = Pachydon hettneri, "Corbula cebada n. sp." = Pachydon cebada
"Corbula hettneri n. sp." = Pachydon hettneri Anderson 1928 clam
"Corbula scheibei n. sp." = Pachydon hettneri Anderson 1928 clam
"Corbula cebada n. sp." = Pachydon cebada Anderson 1928 clam