One Twitter user wrote " megalodon got him! "

一名推特网友写道“这是巨牙鲨干的！”

The eight-centimeter tooth came from the giant megalodon species which is believed to have died out round 2.5 million years ago.

这颗牙齿长达8厘米，是一种巨齿鲨。很多人认为巨齿鲨已在大概250万年前灭绝了。

This " Collections Core" shows off a number of objects, from megalodon teeth to Mayan bricks to spools of spider silk.

这件“藏品核心区”展示了许多物品，从巨齿龙的牙齿到玛雅砖块，再到蜘蛛丝的卷轴。

And yet many people wonder if there could still be  any megalodon alive in the depths of the oceans.

然而，许多人想知道在海洋深处是否还有巨齿鲨活着。

Like all sharks, megalodon's skeleton was  made of cartilage, which doesn't fossilize.

像所有鲨鱼一样，巨齿鲨的骨骼是由软骨制成的，软骨不会化石。

The original, big-budget giant megalodon movie, " The Meg, " spent well over a decade in limbo.

最初的大制作巨齿鲨电影《巨齿鲨》搁置了十多年。

So there you go, to defeat the megalodon simply stay on land and never, ever again venture into the water.

所以你走了，要打败巨齿鲨， 只需留在陆地上， 永远不要再冒险进入水中。

The Jurassic Park and Meg franchises would not exist without paleontologists first showing that dinosaurs and megalodon sharks existed.

如果没有古生物学家首先证明恐龙和巨齿鲨的存在，《侏罗纪公园》和《梅格》系列就不会存在。

Most pertinently: How is there another megalodon swimming through the ocean?

最切题的问题是：怎么会有另一只巨齿鲨在海里游泳？

With a body made for killing giants, baby megalodons were under a  lot of pressure to grow quickly.

拥有为杀死巨人而生的身体，小巨齿鲨承受着快速生长的巨大压力。

But if megalodons were so powerful, why did they go extinct?

但是，如果巨齿鲨如此强大，为什么它们会灭绝呢？

But in just those couple million years  without megalodons whale populations exploded.

但是，就在没有巨齿鲨的几百万年里，鲸鱼的数量激增。

And while a third megalodon seems unreasonable, the second shark creates an opportunity for more sharks to appear.

尽管第三只巨齿鲨的出现似乎不太合理，但第二只鲨鱼的出现却为更多鲨鱼的出现创造了机会。

Reconstructing their jaws, researchers think megalodons could eat a now-extinct 7-meter sperm whale in as few as four bites.

重建它们的下颚，研究人员认为巨齿鲨可以在短短四口咬下吃掉现已灭绝的7米抹香鲸。

But this wasn't truly the end to  megalodon's place in the human psyche.

但这并没有真正结束巨齿鲨在人类心灵中的地位。

Because megalodons were highly mobile predators, their extinction had global consequences.

由于巨齿鲨是高度机动的掠食者，它们的灭绝产生了全球性的后果。

In addition to megalodon's teeth, researchers have access to one exceptionally well-preserved spinal column that comprises 141 vertebrae of a 46-year-old megalodon.

除了巨齿鲨的牙齿外，研究人员还可以接触到一个保存完好的脊柱，其中包括46岁巨齿鲨的141块椎骨。

" It's a megalodon." " The Meg 2: The Trench" also took its time swimming into movie theaters around the world.

“这是一条巨齿鲨。”《巨齿鲨2：海沟》也花了不少功夫才进入世界各地的电影院。

Interestingly, some fossil sites harbor especially high numbers of small megalodon teeth.

有趣的是，一些化石遗址拥有特别多的小巨齿鲨牙齿。

Experts believe these were nurseries that supported countless generations of budding megalodons.

专家认为，这些苗圃支持了无数代萌芽的巨齿鲨。