I have a Milk Chocolate Dinosaur Egg, studded with mini chocolate dinosaurs and ammonites.

我有的是牛奶巧克力恐龙蛋，上面点缀着迷你巧克力恐龙和鹦鹉螺化石。

All the ammonites vanished, but their cousins the nautiloids, who lived similar lifestyles, swam on.

菊石统统消失了，但它们的表亲鹦鹉螺目软体动物却存活下来，尽管它们有着相似的生活方式。

This is a fossilized ammonite, and it's at least tens of millions of years old, and it's still iridescent.

这是一个菊石化石，它至少有几千万年的历史了，而且它仍然是彩虹色的。

Often, they'd find the remains of shellfish-like animals like ammonites and bullet-shaped belemnites.

通常，他们会发现菊石和子弹形箭石等贝类动物的遗骸。

Specifically a Mamites Ammonite from the Cretaceous Age.

一只白垩纪的马密特斯菊石。

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。

But in the Devonian, a new branch of the cephalopod family tree appeared: ammonites.

但在泥盆纪，出现了头足类 家族树的一个新分支：菊石。

And the shallow oceans were where the ammonites were living.

浅海是菊石生活的地方。

It spelled the end to 300 million years of ammonite evolution.

这标志着菊石3亿年演化的终结。

So we have this beautiful ammonite which is preserved in limestone and the individual spikes on this ammonite are preserved.

因此，我们有这种美丽的菊石，它保存在石灰岩中，并且这种菊石上的单个尖峰也被保留下来。