Lomas Blancas (Eocene of Argentina)

Where: Chubut, Argentina (45.3° S, 67.1° W: paleocoordinates 47.9° S, 57.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by Scarritt Expedition in 1931; reposited in the AMNH

Primary reference: L. G. Marshall. 1982. Systematics of the extinct South American marsupial family Polydolopidae. Fieldiana Geology 12:1-109 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175739: authorized by Richard Butler, entered by Richard Butler on 08.01.2016, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• Said to be "Faunally unimportant" by Simpson (1948:28).
Mammalia
 Notoungulata - Oldfieldthomasiidae
Oldfieldthomasia sp.3 Ameghino 1901 notoungulate
MGP-PD 29065, maxilla P4-M2
 Notoungulata - Notopithecidae
Notopithecus sp.1 Ameghino 1897 notoungulate
 Notoungulata - Archaeopithecidae
Archaeopithecus rogeri2 Ameghino 1897 notoungulate
AMNH FM 28886
 Polydolopimorphia - Polydolopidae
Polydolops serra Ameghino 1902 metatherian
AMNH 28885