Jurassic Period


What is the Morrison formation and where is it found?

The Morrison formation is a layer of sedimentary rocks famous for the number and diversity of their Jurassic period dinosaur fossils. This formation, named for Morrison, Colorado, is found throughout a large region of western North America. The number of Jurassic dinosaur fossils found in Utah’s Morrison formation include Allosaurus, Apatosaurus, Barosaurus, Brachiosaurus, Camarasaurus, Camptosaurus, Ceratosaurus, Diplodocus, Dryosaurus, Dystrophaeus, Marshosaurus, Stegosaurus, Stokesosaurus, and Torvosaurus.

A wide diverstiy of Jurassic period fossils have been found among the sedimentary rocks of the Morrison formation in Colorado (iStock).

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