Toqui Formation
Geologic formation in the Aysén Region, 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. It consists of a sequence of clastic sedimentary sandstones and conglomerates, interbedded with volcanic tuffs and ignimbrite. The dinosaurs Chilesaurus and indeterminate diplodocids and the mesoeucrocodylian Burkesuchus are known from the formation. The formation was deposited in a fluvio-deltaic environment.
01Paleobiota of the Toqui Formation
Crocodylomorphs
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
| Burkesuchus | B. mallingrandensis | "Fragmented skull and partial postcrania." | A neosuchian. | |
| Crocodylomorpha indet. | Indeterminate | "Partial postcrania." | A neosuchian. |
Dinosaurs
| Genus | Species | Material | Notes | Images |
|---|---|---|---|---|
| Chilesaurus | C. diegosuarezi | "Skull with and skeletons from multiple specimens." | A dinosaur with uncertain affinities. | |
| Diplodocidae indet. | Indeterminate | "Cervical centra." | A diplodocid. | |
| Diplodocinae indet. | Indeterminate | "Partial caudal vertebra." | A diplodocin. | |
|
Sauropoda indet. |
Indeterminate | "Partial dorsal vertebra." | A sauropod. | |
| Indeterminate | "Two caudal vertebrae centra." | A sauropod. | ||
| Indeterminate | "Partial sternal plate." | A sauropod. | ||
|
Titanosauriformes? indet. |
Indeterminate | "Lower end of left femur." | A titanosauriform. | |
| Indeterminate | "Lower end of right tibia." | A titanosauriform. |
Sources and credits
This article is adapted from the Wikipedia article “Toqui Formation”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Chilesaurus holotype cast.jpg by Evelyn D'Esposito, CC BY-SA 2.0
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