Gran Barranca faunule 12 (Eocene of Argentina)

Where: Chubut, Argentina (45.7° S, 68.7° W: paleocoordinates 48.0° S, 59.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Barrancan mammal zone, Gran Barranca Member (Sarmiento Formation), Bartonian (41.3 - 38.0 Ma)

• Barrancan SALMA, Middle Eocene (Woodburne et al. 2014).

•Near middle of Gran Barranca section IV of Cifelli (1985), in "impure gry. tuff, many fossils"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

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: biostratigraphic analysis

PaleoDB collection 176186: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 30.01.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Tribosphenida - Peradectidae
Caroloameghinia mater Ameghino 1901 marsupial
 Polydolopimorphia - Polydolopidae
Polydolops thomasi Ameghino 1897 metatherian
 Sparassodonta -
Patene coluapiensis n. gen. n. sp.
Patene coluapiensis n. gen. n. sp. Simpson 1935 metatherian
 Panameriungulata - Didolodontidae
Didolodus multicuspis Ameghino 1897 placental
 Notoungulata - Oldfieldthomasiidae
Oldfieldthomasia debilitata Ameghino 1901 notoungulate
 Notoungulata - Notostylopidae
Notostylops murinus Ameghino 1897 notoungulate
Homalostylops sp. Ameghino 1901 notoungulate
 Notoungulata - Notopithecidae
Notopithecus adapinus Ameghino 1897 notoungulate
Transpithecus ? obtentus Ameghino 1901 notoungulate
 Cingulata - Dasypodidae
Utaetus buccatus Ameghino 1902 armadillo