Rio de Los Tarros tracksite: Norian, Argentina
collected by J. F. Bonaparte & G. Leonardi 1964, 1966–1981
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Chirotheriidae
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Chirotherium sp.
Kaup 1835
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2 specimens | |||||||||
| PVL 3441, 3448 | ||||||||||
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? Chirotherioidea indet.
Huene 1954
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4 specimens | |||||||||
| PVL 3442, 3449, 3450, 3452 | ||||||||||
|
= cf. Brachychirotherium sp.
Beurlen 1950
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Melchor and de Valais 2006 | |||||||||
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Reptilia
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Chirotherioidea indet.
Huene 1954
|
1 specimen | |||||||||
| PVL 3438 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | La Rioja |
| Coordinates: | 29.6° South, 68.1° West (view map) | ||
| Paleocoordinates: | 38.8° South, 31.6° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Norian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Norian | ||
| Age range of interval: | 227.00000 - 208.50000 m.y. ago |
Stratigraphy
| Geological group: | Agua de la Peña | Formation: | Los Colorados | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: formation is considered to be latest Triassic in age | |||||
Lithology and environment
| Primary lithology: | red siltstone |
| Includes fossils? | Y |
| Lithology description: "reddish siltstones" | |
| Environment: | fluvial-lacustrine indet. |
| Geology comments: "The sequence was interpreted as deposited by moderately sinuous fluvial systems, which laterally interfinger with and grade into horizontally bedded flood-plain deposits. To the top of the sequence, thin-bedded sandstones and siltstones dominate and were deposited in ponds and as crevasse splays in overbank settings" (Arcucci et al. 2004) | |
Taphonomy
| Modes of preservation: | trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),field collection,observed (not collected) | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Collectors: | J. F. Bonaparte & G. Leonardi | Collection dates: | 1964, 1966–1981 |
Metadata
| Also known as: | Leonardi locality 15, Río Los Tarros, Talampaya | ||
| Database number: | 85569 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2009-01-09 09:09:33 | Last modified: | 2019-10-30 11:24:31 |
| Access level: | the public | Released: | 2009-01-09 09:09:33 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14677. | ETE | G. Leonardi. 1994. Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an Appendix on Mexico and Central America. . República Federativa do Brasil, Ministério de Minas e Energia, Secretaria de Minas e Metalurgia, Companhia de Pesquisa de Recursos Minerais, Brasília 1-248 [M. Carrano/K. Maguire/E. Dunne] |
Secondary references:
| 13000 | ETE | A. B. Arcucci, C. A. Marsicano, and A. T. Caselli. 2004. Tetrapod association and palaeoenvironment of the Los Colorados Formation (Argentina): a significant sample from western Gondwana at the end of the Triassic. Géobios 37:557-568 [M. Carrano/M. Carrano/J. Alroy] |
| 17074 | ETE | R. N. Melchor and S. de Valais. 2006. A review of Triassic tetrapod track assemblages from Argentina. Palaeontology 49(2):355-379 [M. Carrano/M. Carrano/B. Allen] |