jurassic period

基本解釋

It’s giving us an overview of the high Arctic during part of the Jurassic period for the very first time.
這差不多是相當于我們第一次對侏羅紀部分時期的高緯度北極地區(qū)有了大致了解。
Gingkos have no close living relatives, and their ancestry can be traced all the way back to the Jurassic period.
銀杏有沒有活著的近親，它們的祖先可以一直追溯到侏羅紀時期。
So, this discovery pushes the existence of the Nephila back to the Jurassic Period, making them the longest ranging spider genus known.
所以，這項研究將絡新婦的出現(xiàn)年代提前到了侏羅紀，使得其成為了蜘蛛中已知的生存年代跨度最大的一屬。

"It's a meat-eating dinosaur. It would have lived in the Late Jurassic period about a 140,150 million years ago.

These dinosaurs lived for about 17 million years during the early Jurassic period.
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In the late Jurassic period, this fleet-footed plant eater, known as Dryosaurus altus, needed those powerful hindquarters to scurry away from its many predators.
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It ran around on two legs 180 million years ago, at the height of the geologic period known as the Jurassic.
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