1.5 leagues northeast of Cabeza Blanca: Casamayoran, Argentina
collected by Carlos Ameghino, Scarritt Expedition 1900, 1931
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Notoungulata
- Archaeopithecidae
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Archaeopithecus rogeri
Ameghino 1897
|
Vera 2017 | |||||||||
| AMNH FM 28824, 28871, 28872; MLP 79-I-17-10, 12, 20, 22, 36, 37, 41, 48 and 50 | ||||||||||
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Mammalia
- Notoungulata
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Notopithecus sp.
Ameghino 1897
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Reguero and Prevosti 2010 | |||||||||
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Mammalia
- Notoungulata
- Notostylopidae
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Entelostylops appressus n. sp.
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Simpson 1948 | 5 specimens | ||||||||
| synonym of Notostylops | ||||||||||
| MACN 10489, P2, P3, M1, M2 (lectotype), m3. | ||||||||||
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Mammalia
- Panameriungulata
- Proterotheriidae
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Josepholeidya adunca
Ameghino 1901
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Simpson 1948 | 1 specimen | ||||||||
| upper molar | ||||||||||
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Mammalia
- Didelphimorphia
- Didelphidae
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Didelphidae indet.
Gray 1821
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Simpson 1948 | 1 specimen | ||||||||
| AMNH 28410 | ||||||||||
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Mammalia
- Polydolopidae
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Polydolops serra
Ameghino 1902
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3 specimens | |||||||||
| AMNH 28408, 28409, 28412 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 44.9° South, 67.2° West (view map) | ||
| Paleocoordinates: | 47.4° South, 57.2° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Casamayoran | Zone: | Casamayoran |
| Age range of interval: | 56.00000 - 47.90000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | AMNH | ||
| Collectors: | Carlos Ameghino, Scarritt Expedition | Collection dates: | c. 1900, 1931 |
Metadata
| Also known as: | Rio Chico 1er. yac. Pyroth. | ||
| Database number: | 175738 | ||
| Authorizer: | R. Butler, J. Zijlstra, P. Mannion | Enterer: | R. Butler, P. Mannion, J. Zijlstra |
| Modifier: | M. Kouvari | Research group: | vertebrate |
| Created: | 2016-01-08 09:54:13 | Last modified: | 2020-09-22 03:11:56 |
| Access level: | the public | Released: | 2016-01-08 09:54:13 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 57557. | L. G. Marshall. 1982. Systematics of the extinct South American marsupial family Polydolopidae. Fieldiana Geology 12:1-109 [R. Butler/R. Butler] |
Secondary references:
| 58079 | M. A. Reguero and F. J. Prevosti. 2010. Rodent-like notoungulates (Typotheria) from Gran Barranca, Chubut Province, Argentina: phylogeny and systematics. In R. H. Madden, A. A. Carlini, M. G. Vucetich, R. F. Kay (eds.), The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia 148-165 [J. Zijlstra/J. Zijlstra] | |
| 10369 | G. G. Simpson. 1948. The beginning of the age of mammals in South America. Part I. Bulletin of the American Museum of Natural History 91:1-232 [D. Croft/D. Croft/R. Butler] | |
| 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] | |
| 63245 | B. Vera. 2017. Patagonian Eocene Archaeopithecidae Ameghino, 1897 (Notoungulata): systematic revision, phylogeny and biostratigraphy. Journal of Paleontology [P. Mannion/P. Mannion] |