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"Jurassic Period"

Definition #1 for "Jurassic Period"

from 190 million to 135 million years ago; dinosaurs; conifers

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Definition #2 for "Jurassic Period"

The Jurassic was a geologic period and system that spanned 56 million years from the end of the Triassic Period 201.3 million years ago (Mya) to the beginning of the Cretaceous Period 145 Mya.[note 1] The Jurassic constituted the middle period of the Mesozoic Era, also known as the Age of Reptiles.

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