Estancia Collón Cura: Colloncuran, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Notoungulata
- Interatheriidae
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Mammalia
- Rodentia
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Acarechimys minutissimus
Ameghino 1887
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Arnal et al. 2017 | |||||||||
| MLP 91-IX-2-168 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Neuquén |
| Coordinates: | 40.0° South, 70.8° West (view map) | ||
| Paleocoordinates: | 39.4° South, 68.2° West (Wright 2013) | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Colloncuran | ||
| Age range of interval: | 15.5 - 13.8 m.y. ago |
Stratigraphy
| Formation: | Collón Cura | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: A recent 40Ar/39Ar analysis in amphibole crystals collected from fresh pumice clasts revealed an age of 14.86 ± 0.13 Ma for the middle section of the Collón Curá Formation in the Gastre Basin (Bilmes et al. 2013), placing this unit and its fauna in the middle Miocene (Langhian) | |||||
Lithology and environment
| Primary lithology: | tuffaceous sandstone |
| Lithology description: In general terms, the Collón Curá Formation is character- ized by tuff, sandstone, and ignimbrite, bearing fossil mam- mals below and above the Pilcaniyeu Ignimbrite Member (Vucetich et al. 1993; Cucchi et al. 1998; Escosteguy et al. 2013). | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Some specimens are new and some are un-published specimens of Roth’s (1899) old collection curated at Museo de La Plata. | |
Metadata
| Database number: | 198564 | ||
| Authorizer: | P. Mannion | Enterer: | M. Kouvari |
| Modifier: | M. Kouvari | ||
| Created: | 2018-12-18 03:19:28 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2018-12-18 03:19:28 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 67593. | B. Vera, M. Reguero, and L. González-Ruiz. 2017. The Interatheriinae notoungulates from the middle Miocene Collón Curá Formation in Argentina. Acta Palaeontologica Polonica 62(4):845-863 [P. Mannion/M. Kouvari] |
Secondary references:
| 72683 | M. Arnal, M. G. Vucetich, D. A. Croft, M. S. Bargo, J. C. Fernícola and S. F. Viscaino. 2017. Systematic revision and evolutionary history of Acarechimys Patterson in Kraglievich 1965 (Rodentia, Caviomorpha, Octodontoidea). Ameghiniana 54(3):307-330 [P. Mannion/M. Kouvari] |