Earth:Angostura Colorada Formation
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| Angostura Colorada Formation Stratigraphic range: Campanian-Maastrichtian | |
|---|---|
| Type | Geological formation |
| Underlies | Coli Toro Formation, Huitrera & Collón Cura Formations |
| Overlies | Sañicó Formation |
| Lithology | |
| Primary | Sandstone, claystone, conglomerate |
| Location | |
| Coordinates | [ ⚑ ] : 41°18′S 68°42′W / 41.3°S 68.7°W |
| Paleocoordinates | [ ⚑ ] 43°54′S 54°42′W / 43.9°S 54.7°W |
| Region | Río Negro Province |
| Country | Argentina |
| Extent | Neuquén Basin, North Patagonian Massif |
| Type section | |
| Named by | Volkhaimer |
| Year defined | 1973 |
  Angostura Colorada Formation (Argentina) | |
The Angostura Colorada Formation is a Campanian to Maastrichtian geologic formation of the Neuquén Basin and North Patagonian Massif in the Río Negro Province of Argentina. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[1]
Description
The Angostura Colorada Formation was defined by Volkhaimer in 1973 and unconformably overlies the Late Triassic volcanics of the Sañicó Formation. The formation is partly overlain by the Huitrera and Collón Cura Formations,[2] and in other parts by the Coli Toro Formation.[3] The formation, outcropping south of Comallo, comprises sandstones, claystones and conglomerates deposited in a fluvial environment.[4]
Fossil content
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Dinosaurs
Ornithischians
| Ornithischians of the Angostura Colorada Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
| Hadrosauridae Indet. | Indeterminate | |||||
| Parankylosauria Indet.[5] | Indeterminate | |||||
Sauropods
| Sauropods of the Angostura Colorada Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Aeolosaurus[1] | A. rionegrinus | A aeolosaurin lithostrotian | ||||
| Lithostrotia Indet.[1] | Indeterminate | |||||
| Saltasaurinae Indet.[6] | Indeterminate | |||||
Theropods
| Theropods of the Angostura Colorada Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Abelisauridae Indet.[7] | Indeterminate | |||||
See also
- List of dinosaur-bearing rock formations
- List of stratigraphic units with few dinosaur genera
References
- ↑ 1.0 1.1 1.2 Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ↑ Prez & Massaferro, 2013, p.223
- ↑ Ottone, 2009, p.377
- ↑ Prez & Massaferro, 2013, p.225
- ↑ Becerra, Marcos G.; Juárez Valieri, R.D; Meso, J.G; Guzmán, F.A; Heredia, J. (2024). "New remains of ankylosaurs in Río Negro (Argentina) found while revisiting collections in museums expand their presence to new late Cretaceous localities.". https://bicyt.conicet.gov.ar/fichas/produccion/11857603.
- ↑ Navarro, Bruno A.; Ghilardi, Aline M.; Aureliano, Tito; Díaz, Verónica Díez; Bandeira, Kamila L. N.; Cattaruzzi, André G. S.; Iori, Fabiano V.; Martine, Ariel M. et al. (2022-09-15). "A new nanoid titanosaur (Dinosauria: Sauropoda) from the Upper Cretaceous of Brazil" (in en). Ameghiniana 59 (5): 317–354. doi:10.5710/AMGH.25.08.2022.3477. ISSN 1851-8044. https://www.researchgate.net/publication/362978138.
- ↑ Paulina-Carabajal, A.; Méndez, A. H.; Ulloa-Guaiquin, K.; González-Dionis, J.; Irazoqui, F. M. (2025). "The first record of theropod dinosaur remains from the Angostura Colorada and Coli Toro formations (Campanian-Maastrichtian) in the Ingeniero Jacobacci area (Rio Negro Province, Argentina)". Ameghiniana. https://www.ameghiniana.org.ar/index.php/ameghiniana/libraryFiles/downloadPublic/146.
Bibliography
- Ottone, Eduardo G (2009), "La flora cretácica de Cuenca Neuquina, su significado paleoambiental y paleoclimático", Revista de la Asociación Geológica Argentina 65: 373–386, http://www.scielo.org.ar/pdf/raga/v65n2/v65n2a11.pdf, retrieved 2018-09-08
- Prez, Horacio; Massaferro, Gabriela (2013), "Geología y geomorfología del tramo superior del Arroyo Comallo, Río Negro", Contribuciones Científicas GÆA 26: 221–234, http://gaea.org.ar/contribuciones/Contribuciones2014/Prez.pdf, retrieved 2018-09-08
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, https://books.google.com/books?id=vtZFDb_iw40C, retrieved 2019-02-21
- Cruzado-Caballero, P. (2017). "New hadrosaurid remains from the Late Cretaceous of Río Negro Province (Argentina, Late Cretaceous)". Journal of Iberian Geology 43 (2): 307–318. doi:10.1007/s41513-017-0023-5. Bibcode: 2017JIbG...43..307C. https://link.springer.com/article/10.1007/s41513-017-0023-5. Retrieved 2021-04-07.
- Zurriaguz, Virginia; Martinelli, Agustín; Rougier, Guillermo W.; Ezcurra, Martín D.; Manabe, Makoto; Tsuihiji, Takanobu; Novas, Fernando E. (2017). "A saltasaurine titanosaur (Sauropoda: Titanosauriformes) from the Angostura Colorada Formation (upper Campanian, Cretaceous) of northwestern Patagonia, Argentina". Cretaceous Research 75: 101–114. doi:10.1016/j.cretres.2017.03.016. Bibcode: 2017CrRes..75..101Z. https://www.sciencedirect.com/science/article/abs/pii/S0195667122003160. Retrieved 2023-01-29.
Further reading
- J. E. Powell. 1987. The Late Cretaceous fauna of Los Alamitos, Patagonia, Argentina part VI—the titanosaurids. Revista del Museo Argentina de Ciencias Naturales "Bernardino Rivadavia" e Instituto Nacional de Investigacion de las Ciencias Naturales: Paleontología 3(3):147-153
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