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Dinosaur Fossils

Dinosauria (order), “Dinosaurio”

Sensitive Classification

Fossils are sensitive in nature and should not be collected unless it is done legally and responsibly. Vertebrate fossils are illegal to collect on public lands.

On the Web

On Wikipedia

Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 million years ago; their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are modern feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event approximately 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and the extinct non…

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Range Maps show field notes recorded by Natural Atlas contributors and other datasets via GBIF.org

Formations Found In

Morrison Formation

309 Observations

Hell Creek Formation

306 Observations

Kirtland and Fruitland Formations (NMKkf;0)

241 Observations

Kirtland Formation

241 Observations

Fruitland Formation

241 Observations

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Dinosaur Fossils

Dinosaur Fossils

Dinosaur Fossils