Jisho

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Noun
1. Jurassic (period)Geology
Wikipedia definition
2. JurassicThe Jurassic is a geologic period and system that extends from about Mya (million years ago) to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by the major Triassic–Jurassic extinction event. However, the end of the period did not witness any major extinction event.
Read “Jurassic” on English Wikipedia
Read “ジュラ紀” on Japanese Wikipedia
Read “Jurassic” on DBpedia

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