Río Belgrano Formation
The Río Belgrano Formation is a Barremian to Aptian geologic formation of the Austral Basin in Patagonia, southern Argentina. Among others, pterosaur and ichthyosaur fossils have been recovered from the formation.[1]
| Río Belgrano Formation Stratigraphic range: Barremian-Aptian | |
|---|---|
| Type | Geological formation |
| Unit of | Pueyrredón Group |
| Underlies | Río Tarde Formation |
| Overlies | Río Mayer Formation |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 48.0°S 72.0°W |
| Approximate paleocoordinates | 48.0°S 35.5°W |
| Region | Santa Cruz Province |
| Country |  Argentina |
| Extent | Austral Basin |
  Río Belgrano Formation (Argentina) | |
Fossil content
The following fossils have been recovered from the formation:[2]
- Hatchericeras patagonense
- Palaeastacus terraereginae
- Platypterygius hauthali[3]
- Sanmartinoceras africanum
- Tonohamites aequicingulatus
- ?Anhangueridae indet.
References
- Río Belgrano Formation at Fossilworks.org
- Río Roble at Fossilworks.org
- Páramo, 2018, p.6
Bibliography
- Páramo Fonseca, María Eurídice. 2018. Restos apendiculares de un ictiosaurio oftalmosáurido del Barremiano inferior de Villa de Leiva, Colombia. Boletín de Geología 40. 15–30. Accessed 2019-02-06.
Further reading
- M. B. Aguirre Urreta. 1989. The Cretaceous decapod Crustacea of Argentina and the Antarctic Peninsula. Palaeontology 32(3):499-552
- M. B. Aguirre Urreta. 1986. Aptian ammonites from the argentinian Austral Basin. The Subfamily Helicancylinae Hyatt, 1894. Annals of the South African Museum 96(7):271-314
- J. F. Bonaparte. 1978. El Mesozoico de America de Sur y sus Tetrapodos [The Mesozoic of South America and its tetrapods]. Opera Lilloana 26:1-596
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