Colhué Huapí Norte Mustersan (Eocene of Argentina)

Where: Chubut, Argentina (45.1° S, 69.0° W: paleocoordinates 47.5° S, 59.7° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Barrancan zone, Bartonian (41.3 - 38.0 Ma)

• Barrancan SALMA, late Lutetian–Bartonian (~42-38 Ma) according to Woodburne et al. (2014)

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by C. Ameghino in c. 1900

Primary reference: G. G. Simpson. 1967. The Ameghinos' localities for early Cenozoic mammals in Patagonia. Bulletin of the Museum of Comparative Zoology 136:63-76 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 176288: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 06.02.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Astrapotheria - Astrapotheriidae
Astraponotus assymmetrus n. sp. Ameghino 1901 placental
MACN 10971, numerous isolated teeth and a maxilla fragment. Simpson (1967:205) says the type is from the Casamayoran of Colhué-Huapi Norte, but this appears to be a mistake; the species is elsewhere said to be Mustersan only.
 Notoungulata - Notohippidae
"Trimerostephanus sigma n. sp." = Puelia sigma
"Trimerostephanus sigma n. sp." = Puelia sigma Ameghino 1901 notoungulate