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La Puente Pit (Paleocene to of Colombia)

Also known as Carbon Cerrejón; Cerrejón Coal Mine

Where: Guajira, Colombia (11.1° N, 72.5° W: paleocoordinates 8.5° N, 59.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Cerrejón Formation, Middle Paleocene to Middle Paleocene (61.7 - 58.7 Ma)

• Dates [60 to 58 Ma] based on 13C correlation to Zachos et al. (2001) global isotope curve. Age estimation from Jaramillo et al. (2007), Palynology, 31:153-189.

• formation-level stratigraphic resolution

Environment/lithology: delta plain; gray, muddy claystone and argillaceous, sandy sandstone

• "a large fluvial depositional setting, pertaining to the ancient Amazonian basin" having a "coastal influence [that] may represent a transition between the marine habitat of most dyrosaurids and a more fully fluvial environment" (Hastings et al. 2011)
• JA: shown as a being a "sandy mudstone-siltstone" in a figure by Hastings et al. 2011; preservation of specimens indicates that the rocks are not strongly lithified

Size class: macrofossils

Reposited in the FLMNH

Collection methods: salvage, surface (in situ), mechanical,

• Specimens on loan to FLMNH, official repository is IGM (Bogota)

Primary reference: J. J. Head, J. I. Bloch, A. K. Hastings, J. R. Bourque, E. A. Cadena, F. A. Herrera, P. D. Polly and C. A. Jaramillo. 2009. Giant boid snake from the Paleocene neotropics reveals hotter past equatorial temperatures. Nature 457:715-717 [J. Head/J. Head] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 106271: authorized by Jason Head, entered by Jason Head on 05.03.2011, edited by John Alroy, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)