Dolores Formation, Uruguay
| Dolores Formation | |
|---|---|
| Stratigraphic range: Late Pleistocene-Early Holocene ~ | |
| Type | Geological formation |
| Location | |
| Country | Uruguay |
| Extent | Paraná Basin |
| Type section | |
| Named for | Dolores, Uruguay |
The Dolores Formation is a geologic formation in Uruguay. The formation is dated to the Late Pleistocene-Early Holocene. Performing optically stimulated luminescence and thermoluminescence methods on sand samples from different locations within the formation produced ages between 32,230 ± 2,640 and 10,570 ± 990 years ago, while a set of calibrated radiocarbon dating based on organic soil, wood, and mammal teeth resulted in ages between 27,436 and 11,857 years ago.[1]
Fossil content
The following fossils have been reported from the formation:
- Catonyx cuvieri[2]
- Hippidion
- Lestodon armatus[3]
- Macrauchenia
- Panochthus tuberculatus[4]
- Smilodon fatalis[5]
- Smilodon populator[6]
- Notiomastodon platensis[7]
- Toxodon
See also
References
- ^ Ubilla, M.; Martínez, S. (2016). "Continental Beds". Geology and Paleontology of the Quaternary of Uruguay. Montevideo: Springer International Publishing. pp. 29–61. doi:10.1007/978-3-319-29303-5.
- ^ Corona, Andrea; Perea, Daniel; McDonald, H. Gregory (2013). "Catonyx cuvieri (Xenarthra, Mylodontidae, Scelidotheriinae) from the late Pleistocene of Uruguay, with comments regarding the systematics of the subfamily". Journal of Vertebrate Paleontology. 33 (5): 1214–1225. Bibcode:2013JVPal..33.1214C. doi:10.1080/02724634.2013.764311. ISSN 0272-4634. S2CID 84078331.
- ^ Lestodon armatus at Fossilworks.org
- ^ Panochthus tuberculatus at Fossilworks.org
- ^ Manzuetti, A.; Jones, W.; Ubilla, M.; Perea, D.; Rinderknecht, A. (2025). "The sabre-toothed cat Smilodon fatalis Leidy, 1868 (Felidae, Machairodontinae) in the late Pleistocene-early Holocene of South America (Dolores Formation, Uruguay): New insights about its paleodistribution, taxonomy and status of the genus". Canadian Journal of Earth Sciences. 62 (7): 1304–1319. doi:10.1139/cjes-2024-0137.
- ^ Aldo Manzuetti; Daniel Perea; Washington Jones; Martín Ubilla; Andrés Rinderknecht (2020). "An extremely large saber-tooth cat skull from Uruguay (late Pleistocene–early Holocene, Dolores Formation): body size and paleobiological implications". Alcheringa: An Australasian Journal of Palaeontology. 44 (2): 332–339. Bibcode:2020Alch...44..332M. doi:10.1080/03115518.2019.1701080. S2CID 216505747.
- ^ Perea, D.; Alberdi, M. T. (2015-12-30). "Los gonfotéridos (Mammalia, Proboscidea) de Uruguay: taxonomía, estratigrafía y cronología". Estudios Geológicos. 71 (2): e036. doi:10.3989/egeol.41864.346. hdl:10261/127862. ISSN 1988-3250.
Bibliography
- Martínez, Sergio A.; Ubilla, M. (2009), El Cuaternario en Uruguay, Universidad de la República de Uruguay, p. 211, retrieved 2019-02-12