In the late Cretaceous period, temperatures inexplicably began to climb.

在晚白垩纪时期气温莫名地又开始攀升。

Evidence that these lizard kings dominated the oceans in the Cretaceous period.

这种发现证明了这些蜥蜴王在白垩纪就统治了海洋。

That happened 66m years ago, at the end of the Cretaceous period.

这一切就发生在6600万年前的白垩纪末期。

But that didn't stop dinosaurs from nesting there during the Cretaceous period.

但这没阻挡恐龙在白垩纪时在此筑巢。

During the mid-Cretaceous period, the world's environment was changing globally.

白垩纪中叶正值全球环境不断变化的时期。

The Cretaceous period was much cooler than that of the Jurassic that preceded it.

白垩纪时期远比之前的侏罗纪时期更加寒冷。

During the Cretaceous period, 140 million years ago, this dinosaur sported a neck of dangerous looking spines.

在一亿四千万年前的白垩纪，这种恐龙的脖子上长着看起来很危险的刺。

That is fair enough. Such landscapes were common during the beasts' heydays, the Jurassic and Cretaceous periods.

这很合理，因为这样的景观在侏罗纪和白垩纪的野兽鼎盛时期很常见。

In the case of pelagornithids, this particular role would be filled by flying reptiles in the Cretaceous period.

白垩纪时期，飞行爬行动物会取代 pelagornithids 这一特殊角色。

The climate changes of the later Cretaceous period were the beginning of the end.

晚白垩纪时期的气候变化是终结的开始。

The best-documented such impact took place 65 million years ago at the end of the Cretaceous period of geological history.

记载最完整的这种灾难曾发生在6500万年前，在地质历史阶段的白垩纪末期。

By the end of the Cretaceous period, global environmental changes saw the emergence of tougher, more fibrous species of plants.

到了白垩纪末期，全球的环境变化带来了更坚韧、纤维更多的植物物种。

We know at the end of the Cretaceous period when these two dinosaurs go extinct, something big occurs in the environment.

我们知道在白垩纪的末期这两种恐龙灭绝之时，环境出现了巨大变化。

Over the next 90 million years, a new era called the Cretaceous period dawned.

在接下来的九千万年里，开始了一个叫做白垩纪的新时期。

But early in the Cretaceous period, both species would eventually lose the bigger fight, becoming extinct.

不过在早白垩纪时期，两个物种都逐渐在另一场更大的斗争中败下阵来，它们都灭绝了。

A species of dinosaur discovered in an Egyptian desert has shed new light on beasts that roamed Africa in the Cretaceous period.

在埃及沙漠中发现的一种恐龙，为白垩纪漫步于非洲的野兽提供了新的认识。

During the mid-Cretaceous period, this thing, without a doubt, was the most dangerous and nastiest animal on planet earth.

在白垩纪中期，这家伙毫无疑问，是地球上最危险可怕的动物。

Its presence in North Africa was problematic because during the Late Cretaceous period the planet was warmer, which means sea levels were higher.

它在北非的存在是有问题的，因为在白垩纪晚期，地球更温暖，这意味着海平面更高。

Actually, Joey, it's the Cretaceous period.

实际上，乔伊，现在是白垩纪时期。

So the inspiration was late Cretaceous period, so hence this bad boy over here.

所以灵感来自白垩纪晚期，所以这里有这个坏男孩。