Río Chico Este: Lutetian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Notoungulata - Archaeopithecidae
Acropithecus rigidus (Ameghino 1901)
synonym of Archaeopithecus rogeri
Mammalia - Notoungulata - Oldfieldthomasiidae
Paginula parca Ameghino 1901
Maxschlosseria praeterita Ameghino 1901
Maxschlosseria minima (Ameghino 1897)
synonym of Maxschlosseria praeterita
Maxschlosseria consumata (Ameghino 1901)
synonym of Maxschlosseria praeterita
Maxschlosseria rusticula (Ameghino 1901)
synonym of Maxschlosseria praeterita
Mammalia - Notoungulata - Notostylopidae
Notostylops pendens (Ameghino 1901)
Mammalia - Notoungulata - Henricosborniidae
Othnielmarshia lacunifera Ameghino 1901
Peripantostylops minutus (Ameghino 1901)
Henricosbornia lophodonta Ameghino 1901
Henricosbornia ampla (Ameghino 1904)
Mammalia - Notoungulata - Isotemnidae
Edvardotrouessartia sola Ameghino 1901
    = Isotemnidae indet. Ameghino 1897
Simpson 1967
MACN A55-7, referred by Ameghino to Edvardotrouessartia but identified as isotemnid by Simpson (1948, 1967).
Anisotemnus distentus (Ameghino 1901)
Thomashuxleya externa n. sp. Ameghino 1901
Simpson 1967 1 specimen
MACN 10537, mandible p4-m2
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 45.1° South, 67.3° West (view map)
Paleocoordinates:47.6° South, 57.4° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
Stage:Lutetian 10 m.y. bin:Cenozoic 2
Key time interval:Lutetian
Age range of interval:47.80000 - 41.20000 m.y. ago
Stratigraphy
Stratigraphy comments: Vacan SALMA (Cifelli 1985). Middle Eocene (Lutetian, ~45 Ma) according to Woodburne et al. (2014).
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Also known as:east of Río Chico
Database number:176165
Authorizer:J. Zijlstra Enterer:J. Zijlstra
Research group:vertebrate
Created:2016-01-30 17:33:32 Last modified:2016-01-30 17:33:32
Access level:the public Released:2016-01-30 17:33:32
Creative Commons license:CC BY
Reference information

Primary reference:
57836. R. Cifelli. 1985. Biostratigraphy of the Casamayoran, Early Eocene of Patagonia. American Museum Novitates 2820:1-26 [J. Zijlstra/J. Zijlstra]

Secondary references:

10312 G. G. Simpson. 1967. The beginning of the age of mammals in South America. Part II. Bulletin of the American Museum of Natural History 137:1-260 [D. Croft/D. Croft/K. Pino]
57943 G. G. Simpson. 1967. The Ameghinos' localities for early Cenozoic mammals in Patagonia. Bulletin of the Museum of Comparative Zoology 136:63-76 [J. Zijlstra/J. Zijlstra]