Comallo: Langhian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Sparassodonta
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Cladosictis patagonica
Ameghino 1887
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Echarri et al. 2021 | |||||||||
| MAPBAR-5150, partial cranium with dentition; MAPBAR-7798, fragment of right maxilla with M2–M3 | ||||||||||
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Mammalia
- Notoungulata
- Interatheriidae
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Protypotherium colloncurensis
Vera et al. 2017
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Protypotherium endiadys
(Roth 1898)
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Mammalia
- Notoungulata
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Hemihegetotherium tantillum
Vera 2019
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Vera 2019 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Rio Negro |
| Coordinates: | 41.1° South, 70.1° West (view map) | ||
| Paleocoordinates: | 41.7° South, 65.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | Mammal zone: | Colloncuran |
| Age range of interval: | 15.98 - 13.82 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: | 198569 | ||
| Authorizer: | P. Mannion | Enterer: | M. Kouvari, G. Varnham |
| Modifier: | G. Varnham | ||
| Created: | 2018-12-18 03:39:37 | Last modified: | 2022-05-19 04:44:32 |
| Access level: | the public | Released: | 2018-12-18 03:39:37 |
| Creative Commons license: | CC BY |
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:
| 81713 | S. Echarri, K. S. Ulloa-Guaiquin, G. Aguirrezabala and A. M. Forasiepi. 2021. Cladosictis patagonica (Metatheria, Sparassodonta) from the Collón Cura Formation (Middle Miocene), Río Negro, Argentina. Ameghiniana 58(6):485-491 [P. Mannion/G. Varnham] | |
| 69350 | B. Vera. 2019. A new species and the record of Hemihegetotherium (Notoungulata, T Hegetotheriidae) in the Middle to Late Miocene of Patagonia, Argentina. Journal of South American Earth Sciences 93:23-35 [P. Mannion/G. Varnham] |