Scientists have unearthed the fossil of a mammal which lived 125 million years ago.

学家出土了生活在1.25亿年前一只哺乳化石。

Fossil footprints bring animals back to life, then.

化石足迹使得“复活“。

The Natural History Museum offers an amazing fossil collection of dinosaurs and other animals.

在自然历博馆，你可以看到震撼恐龙及其他化石收藏。

He is a fossil marine mammals expert at the Smithsonian National Museum of Natural History.

他是密森国家自然历博馆海洋哺乳化石专家。

They are bigger than any other fossil cats.

要比其它化石猫都大。

A piece of history has been found thanks to a boy tripping on a rare, 1.2-million-year-old animal fossil.

一块拥有 120 万年历有化石将一个小男孩绊倒了，人类一段历由此被揭晓。

Douglas Erwin is with the Smithsonian Institution. He said he is sure the fossils are from an animal.

道格拉斯 欧文（Douglas Erwin）在密森尼学会工作。他表示自己很确定这种化石来自于。

We've even found fossilized animal bones that were cut up for dinner that are around 2.5 million years old.

我们甚至发现了被切割过骨骼化石，距今约有 250 万年。

The sedimentary rocks of the Badlands contain one of the world’s largest and most complete collection of mammal fossils.

荒地沉积岩中含有世界上最大、最完整哺乳化石。

However, an analysis of the fossil also revealed some features which resemble those of anthropoids like monkeys and apes, including man.

然而，分析化石发现这种一些特征和类人猿（如猴子、猩猩，包括人类）相似。

But then some researchers discovered that the fossil showed the many limbs of an animal and began to study it further.

但后来一些研究人员发现，这块化石显示了许多腕足，并开始对其进行进一步研究。

That means big animals can be overrepresented at fossil sites.

这意味着大型在化石遗址中可能会被过度代表。

So most animals that become fossils are relatively big.

因此，大多数成为化石体型都比较大。

Usually fossils are the  bones of an ancient animal.

通常化石是古代骨骼。

He said: " This is the most comprehensive piece of work on fossil vertebrates from the Sahara in almost a century."

“这是近一个世纪以来对撒哈拉沙漠脊椎化石最全面研究。”

The fossil shows evidence that the animal's hands and feet had small hooves and their toes were connected to aid in swimming.

化石表明，这种手和脚有小蹄子，它们脚趾是为了辅助游泳。

5% of the fossils of terrestrial vertebrates.

陆生脊椎化石 5%。

Ichnofossils are any track or trail, left behind by an animal.

遗迹化石是留下任何足迹或小径。

In fact, their fossilized conga lines represent some of the first evidence of animal group behaviour.

事实上，他们康茄线化石代表了群体行为一些最初证据。

All her life, Mary kept looking carefully, finding more and more fossils of extinct animals.

她一生都在仔细寻找，发现了越来越多灭绝化石。