| jurassic | <geology> Of the age of the middle Mesozoic, including, as divided in England and Europe, the Lias, Oolite, and Wealden; named from certain rocks of the Jura mountains. The Jurassic period or formation; called also the Jura. Source: Websters Dictionary (01 Mar 1998) |
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| jurassic | from 135 million to 190 million years ago |
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| jurassic | from 135 million to 190 million years ago |
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