| Toqui Formation | |
|---|---|
| Stratigraphic range: Tithonian ~ | |
 Cast of Chilesaurus from the Toqui Formation | |
| Type | Geological formation |
| Unit of | Coihaique Group |
| Underlies | Katterfeld Formation |
| Overlies | Ibáñez Formation |
| Thickness | 300–320 m (980–1,050 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, tuffite, ignimbrite |
| Location | |
| Coordinates | 46°36′S 72°24′W / 46.6°S 72.4°W |
| Approximate paleocoordinates | 44°48′S 32°24′W / 44.8°S 32.4°W |
| Region | Aysén Region |
| Country |  Chile |
  Toqui Formation (Chile) | |
The Toqui Formation is a geological formation in the Aysén Region of southern Chile. It has been dated to the Tithonian stage of the Late Jurassic by uranium–lead dating of zircons, providing ages between 148.7 ± 1.4 Ma and 147 ± 1.0 Ma.[1] It consists of a sequence of clastic sedimentary sandstones and conglomerates, interbedded with volcanic tuffs and ignimbrite.[2] The dinosaurs Chilesaurus and indeterminate diplodocids and the mesoeucrocodylian Burkesuchus are known from the formation.[3][4][5] The formation was deposited in a fluvio-deltaic environment.[6]
- ^ Suárez, Manuel; De La Cruz, Rita; Fanning, Mark; Novas, Fernando; Salgado, Leonardo (2015-12-28). "Tithonian age of dinosaur fossils in central Patagonian, Chile: U–Pb SHRIMP geochronology". International Journal of Earth Sciences. 105 (8): 2273–2284. doi:10.1007/s00531-015-1287-7. ISSN 1437-3254.
- ^ Salgado, Leonardo; Cruz, Rita Dela; Suárez, Manuel; Fernández, Marta; Gasparini, Zulma; Palma-Heldt, Sylvia; Fanning, Mark (2008-06-12). "First Late Jurassic dinosaur bones from Chile". Journal of Vertebrate Paleontology. 28 (2): 529–534. doi:10.1671/0272-4634(2008)28[529:fljdbf]2.0.co;2. hdl:1885/37839. ISSN 0272-4634.
- ^ Novas, Fernando E.; Salgado, Leonardo; Suárez, Manuel; Agnolín, Federico L.; Ezcurra, Martín D.; Chimento, Nicolás R.; de la Cruz, Rita; Isasi, Marcelo P.; Vargas, Alexander O. (2015). "An enigmatic plant-eating theropod from the Late Jurassic period of Chile". Nature. 522 (7556): 331–334. Bibcode:2015Natur.522..331N. doi:10.1038/nature14307. ISSN 0028-0836. PMID 25915021.
- ^ Salgado, Leonardo; Novas, Fernando E.; Suarez, Manuel; Cruz, Rita De La; Isasi, Marcelo; Rubilar-Rogers, David; Vargas, Alexander (2015). "Late Jurassic Sauropods in Chilean Patagonia". Ameghiniana. 52 (4): 418–429. doi:10.5710/amgh.07.05.2015.2883. hdl:11336/39545. ISSN 0002-7014.
- ^ Cite error: The named reference
Novas2021was invoked but never defined (see the help page). - ^ Toqui Formation, Aysén at Fossilworks.org