Today's crocodylians are all aquatic ambush predators.

今天的鳄鱼都是水生伏击捕食者。

For a time, the waters here were too cold for crocodylians.

有一段时间，这里的水对鳄鱼来说太冷了。

Some archosaurs, like crocodylians, have been shown to exhibit general parenting behavior.

一些主龙，如鳄鱼，已被证明表现出一般的养育行为。

But eventually, the climate warmed, and by about 113 million years ago, crocodylians had arrived with it.

但最终，气候变暖，到大约 1.13 亿年前，鳄鱼也随之来到这里。

Just take a look at one of the most famous so-called living fossils -- the crocodylians, like alligators, crocodiles, and gharials.

看看最著名的所谓活化石之一——鳄鱼，如短吻鳄、鳄鱼和食肉动物。

But we talked to a couple of experts in ancient crocodylians, including Dr. Christopher Brochu, who re-classified Pristichampsus as Boverisuchus.

但我们与几位研究古代鳄鱼的专家进行了交谈，其中包括克里斯托弗·布罗楚博士， 他将 Pristichampsus 重新归类为 Boverisuchus。

The study then compared that data with the same info from different groups of living archosaurs, the group that includes birds, non-avian dinosaurs, and also all of the crocodylians.

然后，该研究将该数据与来自不同现存主龙类群的相同信息进行了比较，该类群包括鸟类、非鸟类恐龙以及所有鳄鱼。

But what you're not seeing are all of the forms of crocodylians that have since been lost -- ones that show us how much their family has changed.

但是你看不到的是所有形式的鳄鱼，它们已经消失了——它们向我们展示了它们的家庭发生了多大的变化。