To find such living fossils from as far back as the Cretaceous is extraordinary.

能发现白垩的活化石是非同了不起的。

Predators of Cretaceous are gigantic by our standard.

在我们看来白垩的食肉动物都是巨大的。

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

所有这些白垩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。

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的新时期。

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和白垩的野兽鼎盛时期很常见。

The mighty carnivores ruled a dangerous world of Cretaceous Period.

强大的食肉动物统治着白垩的凶险世。

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

披羽蛇翼龙能让白垩晚期的其他动物汗毛倒立。

It lived in coastal wetlands more than 66 million years ago during Earth's Cretaceous Period.

它生活在6600多万年前地球白垩时期的沿海湿地中。

Specifically a Mamites Ammonite from the Cretaceous Age.

一只白垩的马密特斯菊石。

The prehistoric world of the Cretaceous Period.

这里是白垩时期的史前世。

Being confined on the island of Madagascar in the late Cretaceous was pretty tough.

在白垩的末期，被限制在马达加斯加岛上很艰难。

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，这种恐龙的脖子上长着看起来很危险的刺。

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

风神翼龙可谓白垩的隐形轰炸机...它拥有最先进的空对地武器。

Instead of getting bigger, like many other theropods in the Cretaceous, these dinos shrunk.

这些恐龙并没有像白垩的许多其他兽脚类动物那样变大，而是缩小了。

Castillo said during the Creataceous, marine turtles had increased body sizes.

卡斯蒂略说，在白垩时期，海龟的体型增大了。

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

我们在马里兰发现的白垩早期化石保存在砂岩和粘土岩中。

It lived about 72 million years ago during a period of time called the Cretaceous Period.

它生活在大约7200万年前的白垩时期。

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

埃德蒙顿龙就好像是白垩平原上的牛羚。

The oldest-known ant fossil dates back about 100 million years to the Cretaceous Period.

已知的最古老的蚂蚁化石可以追溯到大约1亿年前的白垩时期。

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

这一切就发生在6600万年前的白垩末期。