It's not like singing or other behaviors can be fossilized!

唱歌或者其他行为很难有化石记录！

And since the seashell stuff is basically rock, the iridescence can even be seen after these shells fossilized.

由于贝壳基本上就是岩石，在这些贝壳变成化石后，甚至可以看到彩虹色。

The researchers examined patterns fossilized within the bones of dinosaurs and some of their relatives.

研究人员检查了恐龙及其近亲骨骼化石中的图案。

But the critters were fossilized together in ways that suggest they sought out each others' company.

但这些动物以一起变成化石的方式表明它们互相寻找伴侣。

So it appears this sucker died and fossilized with a bellyful of blood—the only known specimen.

如此看来这家伙是带着一肚子的血液死后变成化石的—这是唯一已知的标本。

We know who the predator was, because it left a tooth in the whale's body, which eventually fossilized.

我们知道捕食者是谁，因为它在鲸鱼体内留下了一颗牙齿，最后变成了化石。

Unlike dinosaur bones or ammonite shells the  squishier worms did not fossilize easily.

与恐龙骨头或菊石壳不同，较软的蠕虫不容易形成化石。

Things like warning displays, chemicals, or camouflage patterns don't fossilize.

诸如警告显示、化学品或伪装图案之类的东西不会变成化石。

Although behaviors don't fossilize, the structures necessary for some behaviors do.

虽然行为不会僵化，但某些行为所必需的结构会。

We've got mudstones and very fine-grained sediments and how they fossilize, nodules and cementation.

我们有泥岩和非常细粒的沉积物，以及它们如何化石化、结核和胶结作用。