Cerro del Hadro: Late Maastrichtian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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| 1 specimen | ||||||||||
| "non-avian theropod teeth" | ||||||||||
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Reptilia
- Hadrosauridae
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| 2 individuals | ||||||||||
| UNPSJB-PV 1050 and 1061 | ||||||||||
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Angiospermae
- Buxales
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Polypodiopsida
- Marsileaceae
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| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 45.6° South, 68.5° West (view map) | ||
| Paleocoordinates: | 45.5° South, 57.5° West (Wright 2013) | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late Maastrichtian | ||
| Age range of interval: | 72.2 - 66 m.y. ago |
Stratigraphy
| Geological group: | Chubut | Formation: | Lago Colhué Huapi | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Uppermost Lago Colhué Huapi Formation. Geological studies—particularly those of palynomorphs—support a late Maastrichtian age, probably close to the Cretaceous/Paleogene boundary, for the stratigraphic horizon in question (Vallati et al., 2016, 2020). | |||||
Lithology and environment
| Primary lithology: | "cross stratification",medium,coarse,black sandstone |
| Includes fossils? | Y |
| Lithology description: ochre and black, coarse-to medium-grained crossbedded sandstones | |
| Environment: | fluvial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: UNPSJB | |
Metadata
| Also known as: | Headwaters of the Río Chico | ||
| Database number: | 220171 | ||
| Authorizer: | P. Mannion, E. Vlachos | Enterer: | P. Mannion, F. Aspromonte |
| Modifier: | P. Mannion | ||
| Created: | 2021-05-10 05:39:00 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2021-05-10 05:39:00 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 76843. | L. M. Ibiricu, G. A. Casal, B. N. Alvarez, A. Sosa Tomas, M. C. Lamanna and P. Cruzado-Caballero. 2021. New hadrosaurid (Dinosauria: Ornithopoda) fossils from the uppermost Cretaceous of central Patagonia and the influence of paleoenvironment on South American hadrosaur distribution. Journal of South American Earth Sciences 110:103369 [P. Mannion/P. Mannion/F. Aspromonte] |