Cañadón Hondo, Kibenikhoria Faunal Zone: Riochican, Argentina
collected by Piatnitzky, Scarritt Expedition, Feruglio 1931
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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? Litopterna indet.
Ameghino 1889
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1 specimen | |||||||||
AMNH 28572 | ||||||||||
= Litopterna indet.
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Vera and Krause 2020 | |||||||||
Reptilia
- Madtsoiidae
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? Madtsoia sp.
Simpson 1933
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Albino 1993 | 4 specimens | ||||||||
MACN 18951, incomplete centrum from mid-trunk vert; UNPSJB-PV 477 to 479, three very fragmentary vertebral centra | ||||||||||
Mammalia
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Gashternia ctalehor n. gen., n. sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28533 (holotype) | ||||||||||
Mammalia
- Sparassodonta
- Borhyaenidae
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Patene sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28532 | ||||||||||
= Borhyaenidae indet.
Savage 1951
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Marshall 1981 | |||||||||
Mammalia
- Polydolopidae
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? Polydolops kamektsen n. sp.
Simpson 1935
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1 specimen | |||||||||
recombined as Pliodolops kamektsen | ||||||||||
AMNH 28525 (holotype) | ||||||||||
Mammalia
- Astrapotheria
- Trigonostylopidae
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Shecenia ctirneru n. gen., n. sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28531 | ||||||||||
= Trigonostylopidae indet.
Ameghino 1901
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Vera and Krause 2020 | |||||||||
Seudenius cteronc n. gen., n. sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28538 | ||||||||||
= Trigonostylops sp.
Ameghino 1897
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Vera and Krause 2020 | |||||||||
Mammalia
- Notoungulata
- Henricosborniidae
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? Peripantostylops orehor n. sp.
Simpson 1935
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2 specimens | |||||||||
AMNH 28526 (holotype). AMNH 28555 (paratype) | ||||||||||
= Henricosbornia lophodonta
Ameghino 1901
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Vera and Krause 2020 | |||||||||
Henricosbornia waitehor n. sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28530 (holotype) | ||||||||||
= Henricosbornia lophodonta
Ameghino 1901
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Vera and Krause 2020 | |||||||||
Mammalia
- Notoungulata
- Oldfieldthomasiidae
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? Notostylopidae indet.
Ameghino 1897
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1 specimen | |||||||||
AMNH 28556 | ||||||||||
= Kibenikhoria get
Simpson 1935
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Vera and Krause 2020 | |||||||||
Kibenikhoria get n. gen., n. sp.
Simpson 1935
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5 specimens | |||||||||
AMNH 28542 (holotype). AMNH 28563 (paratype). AMNH 28544, 28548, 28543 | ||||||||||
Mammalia
- Notoungulata
- Archaeopithecidae
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? Transpithecus sp.
Ameghino 1901
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1 specimen | |||||||||
AMNH 28578 | ||||||||||
= Archaeopithecidae indet.
Ameghino 1897
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Vera 2012 | |||||||||
Based on AMNH 28534 and 28578, which apparently had been confused in the AMNH collection. Vera (2012) identified both as Archaeopithecidae. | ||||||||||
Notopithecidae indet.
Ameghino 1897
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Isolated teeth and jaw fragments | ||||||||||
= Archaeopithecidae indet.
Ameghino 1897
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Vera 2012 | |||||||||
Mammalia
- Notoungulata
- Isotemnidae
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? Isotemnus ctalego n. sp.
Simpson 1935
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2 specimens | |||||||||
AMNH 28568 | ||||||||||
Isotemnidae indet.
Ameghino 1897
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2 specimens | |||||||||
Two teeth | ||||||||||
= Isotemnus cf. ctalego
Simpson 1935
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Vera and Krause 2020 | |||||||||
Mammalia
- Panameriungulata
- Didolodontidae
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Ernestokokenia yirunhor n. sp.
Simpson 1935
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1 specimen | |||||||||
AMNH 28539 (holotype) | ||||||||||
see common names |
Geography
Country: | Argentina | State/province: | Chubut |
Coordinates: | 45.4° South, 67.7° West (view map) | ||
Paleocoordinates: | 48.0° South, 57.5° West | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | outcrop |
Time
Period: | Paleogene | Epoch: | Paleocene |
Stage: | Thanetian | 10 m.y. bin: | Cenozoic 1 |
*Period: | Early/Lower Tertiary | *Epoch: | Late/Upper Paleocene | *Local age/stage: | Riochican |
Key time interval: | Riochican | Mammal zone: | Riochican |
Age range of interval: | 57.00000 - 55.80000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Geological group: | Río Chico | Formation: | Las Flores | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Mid–late Ypresian; Upper Las Flores Formation (e.g. Visser Member sensu Andreis, 1977); Kibenikhoria Faunal Zone of Simpson (1935), previously assigned to Itaboraian SALMA, but revised to Riochican SALMA by Vera and Krause (2020) |
Lithology and environment
Primary lithology: | medium,coarse sandstone |
Includes fossils? | Y |
Environment: | alluvial fan |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Disassociated minor elements: | many |
Collection methods and comments
Collection methods: | field collection,survey of museum collection | ||
Reason for describing collection: | taxonomic analysis | ||
Museum repositories: | AMNH | ||
Collectors: | Piatnitzky, Scarritt Expedition, Feruglio | Collection dates: | 1931 |
Metadata
Also known as: | Canadon Hondo | ||
Database number: | 14205 | ||
Authorizer: | J. Alroy, P. Mannion, J. Zijlstra, P. Barrett, R. Butler | Enterer: | J. Wertheim, J. Zijlstra, R. Butler, P. Mannion, T. Cleary |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2002-05-23 09:57:40 | Last modified: | 2022-10-07 16:18:00 |
Access level: | the public | Released: | 2002-05-23 09:57:40 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6147. | 5% 49100 | G. G. Simpson. 1935. Descriptions of the oldest known South American mammals, from the Rio Chico Formation. American Museum Novitates 793:1-25 [J. Alroy/J. Wertheim/J. Wertheim] |
Secondary references:
59238 | A. M. Albino. 1993. Snakes from the Paleocene and Eocene of Patagonia (Argentina): paleoecology and coevolution with mammals. Historical Biology 7:51-69 [P. Barrett/T. Cleary] | |
58306 | L. G. Marshall. 1981. Review of the Hathlyacyninae, an extinct subfamily of South American "dog-like" marsupials. Fieldiana Geology 7:1-120 [J. Zijlstra/J. Zijlstra] | |
57551 | G. G. Simpson. 1935. Occurrence and relationships of the Rio Chico fauna of Patagonia. American Museum Novitates 818:1-21 [R. Butler/R. Butler] | |
58097 | B. Vera. 2012. Revisión del género Transpithecus Ameghino, 1901 (Notoungulata, Interatheriidae) del Eoceno medio de Patagonia, Argentina. Ameghiniana 49(1):60-74 [J. Zijlstra/J. Zijlstra/J. Zijlstra] | |
73732 | B. Vera and J. M. Krause. 2020. New insights into the Kibenikhoria and Ernestokokenia faunas and the implications for the early Eocene of Patagonia, Argentina. Journal of Vertebrate Paleontology e1772801:1-21 [P. Mannion/P. Mannion] | |
57561 | M. O. Woodburne, F. J. Goin, M. Bond, A. A. Carlini, J. N. Gelfo, G. M. López, A. Iglesias and A. N. Zimicz. 2014. Paleogene Land Mammal Faunas of South America; a Response to Global Climatic Changes and Indigenous Floral Diversity. Journal of Mammalian Evolution 21:1-73 [R. Butler/R. Butler] |