List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Megatheriidae
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Pyramiodontherium scillatoyanei n. sp.
De Iuliis et al. 2004
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Mammalia
- Cingulata
- Chlamyphoridae
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Prozaedyus sp.
(Ameghino 1891)
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Brandoni et al. 2023 | |||||||||
| CRILAR-Pv 121 | ||||||||||
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Mammalia
- Cingulata
- Dasypodidae
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Chasicotatus peiranoi
Esteban and Nasif 1996
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Brandoni et al. 2023 | |||||||||
| CRILAR-Pv 119 | ||||||||||
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Paleuphractus argentinus
Moreno and Mercerat 1891
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Brandoni et al. 2023 | |||||||||
| CRILAR-Pv 122 | ||||||||||
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Macrochorobates scalabrinii
(Moreno and Mercerat 1891)
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Brandoni et al. 2023 | |||||||||
| CRILAR-Pv 120 | ||||||||||
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Vetelia gandhi
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Brandoni et al. 2023 | |||||||||
| CRILAR-Pv 116-118 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | La Rioja |
| Coordinates: | 28.6° South, 68.2° West (view map) | ||
| Paleocoordinates: | 28.4° South, 67.4° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | local area |
Stratigraphy
| Formation: | Toro Negro | Member: | Inferior | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: upper levels of the lower member of the Toro Negro Formation
For the levels bearing Py. scillatoyanei, based on data from Tabutt et al. (1989), De Iuliis et al. (2004) estimated an age between 3.11 and 3.04 Ma (Piazencian, Late Pliocene). However, many different ages for the lower member of the Toro Negro Formation were proposed: Ciccioli et al. (2005) indicated an age of 8.6 ± 0.3 Ma and 6.8 ± 0.2 Ma (Late Miocene) for the middle-upper levels of the member; Amidon et al. (2016) indicated an age of c. 6.87 to 4.95 Ma (Messinian-Zanclean; see also Ciccioli et al. 2020); and Ciccioli et al. (2018) mentioned ages of 6.64 ± 0.1 Ma and 5.40 ± 0.12 Ma for levels at Quebrada del Yeso. Considering the most accurate proposed ages (see Ciccioli et al. 2005, 2018, 2020; Amidon et al. 2016) a Messinian-Zanclean age (Late Miocene-Early Pliocene) is herein considered for the lower member of the Toro Negro Formation. | |||||
Lithology and environment
| Primary lithology: | lithified mudstone |
| Includes fossils? | Y |
| Environment: | fluvial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -multiple events |
| Size of fossils: | macrofossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MLP |
Metadata
| Also known as: | Sierra de Los Colorados | ||
| Database number: | 157303 | ||
| Authorizer: | C. Jaramillo, P. Mannion | Enterer: | J. Carrillo, P. Mannion |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2014-06-12 05:24:03 | Last modified: | 2023-07-26 07:56:36 |
| Access level: | the public | Released: | 2014-06-12 05:24:03 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 51721. | G. De Iuliis, G. Ré, and S. F. Vizcaíno. 2004. The Toro Negro Megatheriinae (Mammalia, Xenarthra: A new species of Pyramiodontherium and a review of Plesiomegatherium. Journal of Vertebrate Paleontology 24(1):214-227 [C. Jaramillo/J. Carrillo] |
Secondary references:
| 85418 | D. Brandoni, D. Barasoain, and L. R. González Ruiz. 2023. Late Miocene Dasypodidae Gray, 1821 (Xenarthra, Cingulata) from the Toro Negro Formation (Central Andes, Argentina): diversity and chronological and biogeographical implications. Comptes Rendus Palevol 22(1):1-16 [P. Mannion/P. Mannion] |