Cretaceous. Let's delete that as well.

纪。这个也要删掉。

Quetzalcoatlus would make all other animals in the Late Cretaceous stare.

披羽蛇翼龙能让纪期的其他动物汗毛倒立。

Well, Edmontosaurus was sort of the Wildebeest of the Cretaceous plains.

埃德蒙顿龙就好像是纪平原上的牛羚。

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

这种发现证明了这王在纪就统治了海洋。

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

但这没阻挡恐龙在纪时在此筑巢。

The early Cretaceous fossils that we find in Maryland are preserved in sandstones and clay-stones.

我们在马里发现的纪早期化石保存在砂岩和粘土岩中。

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

这一切就发生在6600万年前的纪末期。

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

在纪时期气温莫名地又开始攀升。

All these Cretaceous plant eaters, with their complicated apparatus, they're all much more sophisticated.

所有这纪的食草动物都有其复杂的防御器官，它们都是很高级的生物。

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纪的野兽鼎盛时期很常见。

Protostega was a Cretaceous sea turtle that lived about 85 million years ago near modern North America.

原盖龟是一种纪海龟，大约8500万年前生活在现代北美附近。

A Quetzalcoatlus could be seen as a Cretaceous stealth bomber... Air-to-ground weaponry at its finest.

风神翼龙可谓纪的隐形轰炸机...它拥有最先进的空对地武器。

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

纪时期，飞行爬行动物会取代 pelagornithids 这一特殊角色。

The earliest known bird, Archaeopteryx, lived during the Jurassic, the period before the Cretaceous.

人类所熟知的最古老鸟类始祖鸟生活在纪时期之前的侏罗纪时期。

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

纪时期远比之前的侏罗纪时期更加寒冷。

The findings suggest large sizes in marine turtles developed independently in separate Cretaceous lineages in North America and Europe.

研究结果表明，在北美和欧洲不同的纪谱系中，体型较大的海龟独立发育。

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

纪中叶正值全球环境不断变化的时期。

I'm going to delete " cretaceous, " I'm going to delete " Cenozoic" and I'm going to delete " iridium."

我要删除“纪”、“新生代”、“铱”。

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，在地质历史阶段的纪末期。