Fossil footprints bring animals back to life, then.

化石足迹使得动“复活“。

They are bigger than any other fossil cats.

要比其它化石猫科动都大。

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

他是史密森国家自然历史博馆的海洋哺乳动化石专家。

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

科家出土了活在1.25亿年前一只哺乳动的化石。

On a global scale, medium-sized carnivore fossils are slightly less common than small and large.

在全球范围内，中动化石比小和大动化石略少。

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

荒地的沉积岩中含有世界最大、最完整的哺乳动化石。

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

遗迹化石是动留下的任何足迹或小径。

For decades, speculation reigned about where all these seemingly-different fossil animals fit in the family tree of dinosaurs.

几十年来，人们一直在猜测所有这些看似不同的化石动在恐龙家谱中的位置。

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 万年历史的稀有动化石将一个小男孩绊倒了，人类的一段历史由此被揭晓。

5% of the fossils of terrestrial vertebrates.

陆脊椎动化石的 5%。

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）在史密森尼会工作。他表示自己很确定这种化石来自于动。

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的动骨骼化石，距今约有 250 万年。

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

事实，他们的康茄线化石代表了动群体行为的一些最初证据。

But scientists have uncovered fossil evidence of an animal that produces sperm ten times longer than its body.

但是科家们发现了一种动的化石证据，这种动产的精子比它的身体长十倍。

NARRATOR: Anatomists Farish Jenkins and Steve Gatesy are specialists in the function of limbs and joints in fossil animals.

旁白：解剖家法里什·詹金斯和史蒂夫·盖茨是化石动四肢和关节功能方面的专家。

Thousands of brachiopod fossils at the site had been clustered in sediment once covered by the sea.

该遗址的数千块腕足动化石曾聚集在曾经被海水覆盖的沉积中。

Don Brinkman, a specialist in the fossils of reptiles, has found scattered pieces of an ancient crocodile.

爬行动化石专家唐·布林克曼 （Don Brinkman） 发现了一条古代鳄鱼的零散碎片。

Druckenmiller: We don't actually find fossils of cold-blooded land-living animals alongside our dinosaurs.

德鲁肯米勒：我们实际并没有在恐龙旁边找到冷血陆动的化石。

One way they do this is by examining the fossils of what were once living creatures and living primates.

一种方法是检验曾经活着的和现存的灵长类动的化石。

For example, lush jungles basically prevent fossilization as the chances that an animal will be buried here is minimal.

例如，茂密的丛林基本可以防止化石化，因为动被埋在这里的可能性很小。