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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 ]
The most famous of vertebrate inhabitants of this shallow seaway were ichthyosaurs, a diverse biota of Triassic ichthyosaurs has been found across the state, including the state fossil Shonisaurus. Recent finds have also included large highly carnivorous ichthyosaur species recently found in Pershing County.
Single tooth fossil of pycnodont fish is represented from Dinosaur National Monument in Utah, [11] found in stratigraphic zone 4. [10] Dipnoan remains found at a fossil site not far from Cañon City, Colorado. [9] Remains usually in a state of rather complete preservation. [9]
A crocodile-like creature bit the neck of a flying dinosaur some 76 million years ago – and scientists have proof. Archaeologists found the fossilized neck bone of the young pterosaur in Canada ...
A rare dinosaur bone bed containing 115-million-year-old fossils has been unearthed in Maryland, officials and experts say. During a dig at Prince George’s County’s Dinosaur Park in Laurel in ...
Only two non-avian dinosaur fossils have been found in Oregon, and both are isolated bones in marine rocks, which evidently bloated and floated out to sea. One is the pedal phalanx of a large (5 m long) ornithopod , intermediate in size and morphology between Tenontosaurus and Eolambia , from the Early Cretaceous ( Albian ) Hudspeth Shale near ...
Florida has a very rich fossil record spanning from the Eocene to recent times. Florida fossils are often very well preserved. [1] The oldest known fossils in Florida date back to the Eocene. At this time Florida was covered in a sea home to a variety of marine invertebrates and the primitive whales, such as Basilosaurus.
Reptile and amphibian fossils like Captorhinus are found nearby in other counties. [114] Such Permian remains are viable candidates for the fossils used medicinally by the Comanche, but local Jurassic and Cretaceous dinosaur remains like those of Apatosaurus, Saurophaganax, Sauroposeidon and Tenontosaurus are also candidates.