Time period help?

According to my research, the stegosaurus lived 145 million years ago. Wha time period is that?

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  • 1 decade ago
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    stegosaur

    - dinosaur with bony plates and spikes: a plant-eating dinosaur that lived in the Mesozoic Era in the Period of Jurassic and Early Cretaceous during the Epoch of Middle Jurassic to late or Upper Cretaceous

    Mesozoic 248 million to 65 million years ago

    Mesozoic Era has 3 periods

    Triassic 248 to 206 million years ago

    Jurassic 206 to 144 million years ago

    Cretaceous 144 to 65 million years ago

    Each period is broken down into Epochs as listed above

  • 1 decade ago

    The Stegosaurus lived during the late Jurasic period

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