Gateway to the Paleobiology Database
Pampa de Jones (Nahuel Huapi Este) (Eocene of Argentina)

Where: Neuquén, Argentina (41.0° S, 71.2° W: paleocoordinates 43.5° S, 61.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Huitrera Formation, Ypresian (55.8 - 48.6 Ma)

• "Middle Eocene – Early Oligocene", later dated to the early Eocene (40Ar/39Ar of 54.24 +/- 0.45 Ma)

• group-level stratigraphic resolution

Environment/lithology: crater lake; lithified, brown, green, silty mudstone and sandstone

• Volcanic lacustrine environment probably located near a lake margin
• Most of the macrofossils occur in a blocky, silty mudstone unit of 1 m thickness (Unit 16 in Wilf et al., 2010)

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Museo Palaeontológico (BAR), San Carlos de Bariloche, also called Museo Asociación Paleontológica Bariloche (MAPBAR)

Primary reference: A. M. Báez and L. A. Pugener. 2003. Ontogeny of a new Palaeogene pipid frog from southern South America and xenopodinomorph evolution. Zoological Journal of the Linnean Society 139(3):439-476 [J. Alroy/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84702: authorized by John Alroy, entered by John Alroy on 06.11.2008, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)