Gateway to the Paleobiology Database
CTA-27 (Eocene of Peru)

Also known as CTA 27; Contamana

Where: Loreto, Peru (7.3° S, 74.9° W: paleocoordinates 9.9° S, 66.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Gran Barranca Member (Pozo Formation), Middle Eocene (48.6 - 37.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, muddy claystone

• 30-cm-thick lens of light-grey clay with irregular limestone concretions at the top of the Yahuarango Formation

Size classes: mesofossils, microfossils

Preservation: original phosphate

Collection methods: Museum repository: Museum of Natural Hisotory in Lima, Peru

Primary reference: P. O. Antoine, L. Marivaux, D. A. Croft, G. Billet, M. Ganerod, C. Jaramillo, T. Martin, M. Orliac, J. Tejada, A. J. Altamirano, F. Duranthon, G. Fanjat, S. Rousse and R. Salas-Gismondi. 2011. Middle Eocene rodents from Peruvian Amazonia reveal the pattern and timing of caviomorph origins and biogeography. Proceedings of The Royal Society B 279:1319-1326 [C. Jaramillo/A. Cardenas ] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 144474: authorized by Carlos Jaramillo, entered by Andrés Cardenas on 08.05.2013, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)