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Previously, the oldest record of dinosaurs was from Brazil and Argentina and dated back to the mid-late Carnian stage, about 233.23 to 231.4 million years ago. Nyasasaurus comes from a deposit conventionally considered Anisian in age, meaning that it would predate other early dinosaurs by about 12 million years. [ 1 ]
Fossils of Tawa-like dinosaurs have also been found in South America, which has important indications about paleogeography. During the Early Jurassic Period, dinosaurs such as Dilophosaurus, Anchisaurus, Coelophysis (formerly known as Megapnosaurus), and the early thyreophoran Scutellosaurus lived in North America.
[103] [104] The oldest dinosaur fossils known from substantial remains date to the Carnian epoch of the Triassic period and have been found primarily in the Ischigualasto and Santa Maria Formations of Argentina and Brazil, and the Pebbly Arkose Formation of Zimbabwe. [105]
Scientists have unearthed in Argentina's Patagonian wilderness fossils of what may be the oldest-known member of the dinosaur group known as titanosaurs that includes the largest land animals in ...
The oldest confirmed fossils of a dinosaur are 231 million years old and feature a collection of different species (including members of Herrerasauridae). However, more disputed fossils date back ...
Sue [a] (stylized: SUE), officially designated FMNH PR 2081, is one of the largest, [b] most extensive, and best preserved Tyrannosaurus rex fossils ever found, at over 90 percent recovered by bulk. [4] FMNH PR 2081 was discovered on August 12, 1990, [5] by American explorer and fossil collector Sue Hendrickson, after whom it is named.
Scientists in southern Montana have discovered an ancient species of horned dinosaur called Aquilops. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
Unaysaurus is a genus of unaysaurid sauropodomorph herbivore dinosaur.Discovered in southern Brazil, in the geopark of Paleorrota, in 1998, and announced in a press conference on Thursday, December 3, 2004, it is one of the oldest dinosaurs known.