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.Toqui Formation, Aysén at Fossilworks.org
Paleobiota 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.
See also Geology of Chile Tobífera Formation
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