La Gran Hondonada (Eocene of Argentina)

Also known as el Pozon

Where: Chubut, Argentina (44.3° S, 69.8° W: paleocoordinates 46.8° S, 60.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Mustersan mammal zone, Sarmiento Formation, Middle Eocene (48.6 - 37.2 Ma)

• Mustersan SALMA - Middle to Late Eocene according to Woodburne et al. (2014)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collection methods: MEF: Museo Egidio Feruglio

Primary reference: D. A. Croft, M. Bond, J. J. Flynn, M. Reguero, and A. R. Wyss. 2003. Large archaeohyracids (Typotheria, Notoungulata) from central Chile and Patagonia including a revision of Archaeotypotherium. Fieldiana: Geology (New Series) 49:1-38 [D. Croft/D. Croft/D. Croft]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38879: authorized by Darin Croft, entered by Darin Croft on 12.05.2004, edited by Richard Butler, Jelle Zijlstra, Terri Cleary and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Aves
 Cariamae - Phorusrhacidae
Psilopterinae indet.1 Dolgopol de Saez 1927 terror bird
MPEF-PV 1722, MPEF-PV 1721
Reptilia
 Squamata - Boidae
Boinae indet.2 Gray 1825 boa
MPEF-PV 1039, fragmentary precloacal vertebra
Mammalia
 Notoungulata - Archaeohyracidae
Pseudhyrax eutrachytheroides Ameghino 1901 notoungulate
MLP 67-II-27-359
 Notoungulata - Notopithecidae
Antepithecus brachystephanus5 Ameghino 1901 notoungulate
MPEF-PV 1605b
Guilielmoscottia plicifera4 Ameghino 1901 notoungulate
 Polydolopimorphia - Polydolopidae
"Polydolops mayoi n. sp." = Kramadolops mayoi3
"Polydolops mayoi n. sp." = Kramadolops mayoi3 Odreman Rivas 1978 marsupial
MLP 69—III—24—1, a right mandibular ramus (holotype). MLP 69—III—24—12