Sample LV7, La Venta section (Devonian to of Colombia)

Where: Colombia (6.0° N, 73.0° W: paleocoordinates 47.6° S, 51.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Devonian to Middle Devonian (393.3 - 358.9 Ma)

• Age range from PBDB ref. 9639. About 350 m above base of section.

• bed-level stratigraphic resolution

Environment/lithology: marine; brown shale

• interpreted as offshore, possibly dysoxic
• "very weathered rust-colored shale, laminated to thin bedded"

Collection methods: bulk

Primary reference: S. F. Barrett. 1986. Paleoecology and stratigraphy of Devonian sediments in the northern Andes, Colombia: paleogeographic implications [Unpublished Ph.D. thesis, University of Chicago]. 1-329 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 35883: authorized by Michael Foote, entered by Michael Foote on 08.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Barrett (ref. 9602) gives a detailed faunal list for his entire dissertation, generally down to the species level. The individual samples, however, are presented in his fig. 24 in a form that coarsens the taxonomic resolution to the genus level or even higher. It seems that the brachiopods are more likely to be reported to the genus level.
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
"infaunal bivalves"
 Autobranchia -
Pterioida indet. Newell 1965 clam
 Productida - Eodevonariidae
Eodevonaria sp. Twenhofel 1914
 Spiriferida -
Spiriferida indet. Waagen 1883
 Spiriferida - Acrospiriferidae
Acrospirifer sp. Wedekind 1926
 Rhynchonellida - Leptocoeliidae
Leptocoeliidae indet. Boucot and Gill 1956
  - Tropidoleptidae