La Gran Hondonada (Eocene of Argentina)

Also known as el Pozon

Where: Chubut, Argentina (44.3° S, 69.8° W: paleocoordinates 46.8° S, 60.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Mustersan mammal zone, Sarmiento Formation, Mustersan (48.0 - 42.0 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, Philip Mannion and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Polydolopimorphia - Polydolopidae
"Polydolops mayoi n. sp." = Kramadolops mayoi4
"Polydolops mayoi n. sp." = Kramadolops mayoi4 Odreman Rivas 1978 metatherian
type: MLP 69—III—24—1, a right mandibular ramus (holotype). MLP 69—III—24—12
 Notoungulata - Archaeohyracidae
Pseudhyrax eutrachytheroides Ameghino 1901 notoungulate
MLP 67-II-27-359
 Notoungulata - Notohippidae
Puelia coarctatus3 Ameghino 1901 notoungulate
MLP 67-II-27-27
 Notoungulata - Notopithecidae
Guilielmoscottia plicifera5 Ameghino 1901 notoungulate
Antepithecus brachystephanus6 Ameghino 1901 notoungulate
MPEF-PV 1605b
 Astrapotheria - Astrapotheriidae
Astraponotus sp.3 Ameghino 1901 placental
MPEF PV 1279, MPEF PV 1084, skulls; MPEF PV 1296, right maxilla
Reptilia
 Squamata - Boidae
Boinae indet.2 Gray 1825 boa
MPEF-PV 1039, fragmentary precloacal vertebra
Aves
 Gruiformes - Phorusrhacidae
Psilopterinae indet.1 Dolgopol de Saez 1927 terror bird
MPEF-PV 1722, MPEF-PV 1721