Where: Chubut, Argentina (45.4° S, 67.7° W: paleocoordinates 47.9° S, 57.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Casamayoran mammal zone, Sarmiento Formation, Casamayoran (56.0 - 48.0 Ma)

• Bottom of bed III in measured section CF.

•This is a single horizon ("green bentonite with Sebecus, birds, etc.") within the Sarmiento Formation at Cañadon Hondo, and distinct from Rio Chico remains at the same locality (PBDB 14205). Casamayoran SALMA of Middle Eocene age

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; green claystone and white tuff

Size class: macrofossils

Reposited in the AMNH

Primary reference: G. G. Simpson. 1937. New reptiles from the Eocene of South America. American Museum Novitates 927:1-3 [J. Alroy/J. Wertheim/J. Wertheim]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39295: authorized by John Alroy, entered by Jill Wertheim on 25.05.2004, edited by John Alroy, Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)