Letrero Formation
| Letrero Formation | |
|---|---|
| Stratigraphic range: Late Miocene (Mayoan-Montehermosan) ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Siltstone |
| Other | Sandstone |
| Location | |
| Coordinates | 3°18′S 79°06′W / 3.3°S 79.1°W |
| Approximate paleocoordinates | 3°42′S 77°24′W / 3.7°S 77.4°W |
| Region | Azuay Province |
| Country |  Ecuador |
| Extent | Sierra Region |
  Letrero Formation (Ecuador) | |
The Letrero Formation is a Late Miocene (Mayoan to Montehermosan in the SALMA classification) geologic formation in south-central Ecuador. The formation comprises lacustrine sediments with strong fluvial clastic input and contains siltstones and fine-grained sandstones.[1]
Fossil content
[edit]The formation has provided fossils of:
See also
[edit]References
[edit]- ^ RHM Locality 4 at Fossilworks.org
- ^ Carlini et al., 2014
Bibliography
[edit]- Carlini, Alfredo A.; Castro, Mariela C.; Madden, Richard H.; Scillato Yané, Gustavo J. (2013), "A new species of Dasypodidae (Xenarthra: Cingulata) from the late Miocene of northwestern South America: implications in the Dasypodini phylogeny and diversity", Historical Biology: An International Journal of Paleobiology, 26 (6): 728–736, retrieved 2019-02-09