Gingkos have no close living relatives, and their ancestry can be traced all the way back to the Jurassic period.

银杏有没有活着的近亲，它们的祖先可以一直追溯到侏罗纪时期。

youdao

It's giving us an overview of the high Arctic during part of the Jurassic period for the very first time.

这差不多是相当于我们第一次对侏罗纪部分时期的高纬度北极地区有了大致了解。

youdao

So, this discovery pushes the existence of the Nephila back to the Jurassic Period, making them the longest ranging spider genus known.

所以，这项研究将络新妇的出现年代提前到了侏罗纪，使得其成为了蜘蛛中已知的生存年代跨度最大的一属。

youdao

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

VOA: standard.2009.12.08

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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