near lago Colhué Huapi: Coniacian - Maastrichtian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Testudinata indet.
(Oppel 1811)
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| large, undecorated peripheral plate | ||||||||||
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Reptilia
- Testudines
- Chelidae
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Chelidae indet.
Gray 1825
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| small, decorated peripheral plate with size and ornamentation similar to Hydromedusa or Yaminuechelys | ||||||||||
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Reptilia
- Hadrosauridae
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| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 45.7° South, 68.4° West (view map) | ||
| Paleocoordinates: | 46.6° South, 51.1° West (Wright 2013) | ||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Coniacian - Maastrichtian | 10 m.y. bin: | Cretaceous 6 - Cretaceous 8 |
| Key time interval: | Coniacian - Maastrichtian | ||
| Age range of interval: | 89.8 - 66 m.y. ago |
Stratigraphy
| Geological group: | Chubut | Formation: | Lago Colhué Huapi | ||
| Stratigraphy comments: The fossils were recovered about 1.5 m below the erosive contact with the base of the Salamanca Formation | |||||
Lithology and environment
| Primary lithology: | gray,green,red mudstone |
| Includes fossils? | Y |
| Lithology description: the fossils were found in successive layers of green-greyish to reddish mudstones with carbonized logs, interpreted as distal floodplains | |
| Environment: | "floodplain" |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Fragmentation: | frequent |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MEF |
Metadata
| Database number: | 205721 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos |
| Modifier: | G. Varnham | ||
| Created: | 2019-10-18 14:39:47 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2019-10-18 14:39:47 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 70517. | M. G. Becerra, G. A. Casal, J. Sterli, L. M. Ibiricu, and A. M. Onorato. 2019. New fossil remains from the Lago Colhue Huari Formation (Coniacian-Maastrichtian): increasing the record of vertebrate diversity and the paleoecological knowledge for the Late Cretaceous of Patagonia. Reunion de Comunicaciones de la Asociacion paleontologica Argentina, Puerto Madryn. Publicacion Electronica de la APA 19(1R):27-27 [E. Vlachos/E. Vlachos] |