The specimen is from the Middle Jurassic of Morocco, from a site where we named the stegosaur Adratiklit a couple of years ago.

该标本来自摩洛哥侏罗纪中期，几年前我们命名其为山岳剑龙。

By the middle Jurassic, sauropods like Patagosaurus were almost twice the length of Vulcanodon.

到侏罗纪中期，Patagosaurus 等蜥脚类动物的长度几乎是 Vulcanodon 的两倍。

The scientists hope to gain a better understanding about the creature's ecosystem and more about the Middle Jurassic period that lasted from about 160 to 180 million years ago.

科学家希望更好地理解鱼龙的的生态系统以及中侏罗纪时期也就是1.6亿-1.8亿年前的情况。

In 2019, a new species of mammaliaform from the Middle Jurassic called Microdocodon was described - and it had a preserved hyoid bone.

2019 年，描述了一种来自中侏罗世的哺乳动物新物种，称为 Microdocodon - 它具有保存完好的舌骨。

Now, Aggiosaurus was just one member of a larger family of aquatic reptiles called metriorhynchids that lived from the Middle Jurassic to the Early Cretaceous Period.

现在，凶龙只是生活在侏罗纪中期到白垩纪早期的一个更大的水生爬行动物家族的一员，这个家族叫做 metriorhynchids。

But based on what we know about their evolutionary relationships with other reptiles, we think that snakes evolved from a four-limbed ancestor, sometime before the Middle Jurassic Period, 167 million years ago.

但根据我们对它们与其他爬行动物的进化关系的了解，我们认为蛇是在 1.67 亿年前的中侏罗纪之前的某个时候从四肢祖先进化而来的。