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Esquina Blanca - Lower Unit (Pliocene of Argentina)

Where: Jujuy, Argentina (23.3° S, 65.3° W: paleocoordinates 23.4° S, 64.3° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Chapadmalalan mammal zone, Uquía Formation, Chapadmalalan (4.0 - 3.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; medium-grained sandstone

• Sandstone medium to large-scale, cross-bedded

Size class: macrofossils

Collected by de Carles and Castellanos; reposited in the MACN

• This article reports the results of work that began effectively in 1980 but intensified in the past 10 years by various Argentinean workers studying the geology, stratigraphy, and vertebrate paleontology of late Cenozoic strata in NW Argentina. These joint efforts culminated in the field seasons of 1986, 1996, 1998, and 2002

Primary reference: M. A. Reguero, A. M. Candela, and R. N. Alonso. 2007. Biochronology and biostratigraphy of the Uquía Formation (Pliocene- early Pleistocene, NW Argentina) and its significance in the Great American Biotic Interchange. Journal of South American Earth Sciences 23:1-16 [C. Jaramillo/J. Carrillo/J. Carrillo] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 141894: authorized by Carlos Jaramillo, entered by Juan Carrillo on 02.04.2013

Creative Commons license: CC BY (attribution)