Cerro Blanco, Casamayoran (Eocene of Argentina)

Where: Chubut, Argentina (45.8° S, 69.0° W: paleocoordinates 48.1° S, 59.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• "Casamayoran" SALMA (now subdivided into the Vacan and Barrancan SALMAs, both of Middle Eocene age).

•Barrancan SALMA according to Cifelli (1985).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Scarritt Expedition in 1930; reposited in the AMNH

Primary reference: R. Cifelli. 1985. Biostratigraphy of the Casamayoran, Early Eocene of Patagonia. American Museum Novitates 2820:1-26 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175744: authorized by Richard Butler, entered by Richard Butler on 09.01.2016, edited by Jelle Zijlstra

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Astrapotheria - Trigonostylopidae
Albertogaudrya unica3 Ameghino 1901 placental
AMNH 28641, symphysis; AMNH 28640, dentary m3
 Notoungulata - Notopithecidae
Notopithecus sp.2 Ameghino 1897 notoungulate
 Notoungulata - Oldfieldthomasiidae
Oldfieldthomasia debilitata3 Ameghino 1901 notoungulate
AMNH 28600, cranium
 Polydolopimorphia - Polydolopidae
Eudolops tetragonus1 Ameghino 1897 metatherian
AMNH 28435, a fragment of a right mandibular ramus with M2-3 complete