But duckbills had never been found in Africa.

但非洲从未发过鸭嘴兽。

Nonetheless, there's evidence that duckbills were well-adapted for swimming.

尽管如此，有证据表明，鸭嘴兽很适合游泳。

So this is one where the duckbill is definitely more powerful than the predators.

所以这一点上来说鸭嘴龙远比掠食者有力得多。

Unless, perhaps, duckbills swam hundreds of miles across open ocean from what is now Europe.

除非鸭嘴兽从欧洲游几百英里穿过广阔。

The duckbill had a thick hide and the ability to shake rapidly to throw off attackers.

鸭嘴龙有厚厚皮，也有能力迅速晃动甩掉攻击者。

They would reveal the identity of the dinosaur that feasted on the duckbill.

他们将揭开进食鸭嘴龙恐龙身份。

In North America, fossils of duckbill dinosaur are abundant.

北美，鸭嘴兽化石非常丰富。

To better understand the migrations of duckbill dinosaurs, Longrich and his colleagues reconstructed their evolutionary tree.

为了更好地理解鸭嘴龙迁徙，隆瑞奇和他同事重建了他们进化树。

But because we don't, it appears that the duckbill was already dead before the T-Rex even showed up.

但是因为我们没看到，看起来霸王龙身之前这头鸭嘴龙就已经死了。

They have a particular spot where they are going to try to drive the duckbill towards.

它们有个特别地点，正把鸭嘴龙往那里驱赶。

So a duckbill like Edmontosaurus, we find actually in several different types of environments.

所以我们发像埃德蒙顿龙这类鸭嘴龙，实际上生活几种不同环境里。

But maybe there was other evidence to support the notion that Raptors preyed upon the duckbill.

但是也许还有其它证据会支持迅猛龙捕食鸭嘴龙这个想法。

There is no evidence that any other duckbills were with it.

没有证据表明有其它鸭嘴龙跟它一起。

We even find duckbills that lived all the way down to the coasts.

我们甚至发鸭嘴龙一路分布到边。

As long as it could find some plants to eat, a duckbill was happy.

只要它能找到植物吃，鸭嘴龙就会开心。

This time they focus on the skull and the neck of the duckbill.

这回它们针对鸭嘴龙头颅和颈部。

I've had the opportunity to study a large duckbill nicknamed T.C.

我有机会研究过一头小名叫T.C.大型鸭嘴龙。

Some duckbills were 50-feet long, but Ajnabia was perhaps the smallest of these Cretaceous vegetarians, about the size of a pony.

有些鸭嘴兽有50英尺长，但异域龙可能是白垩纪最小素食者，只有小马那么大。

Their size is impressive, but what makes these duckbill dinosaurs look so cool is that real funky skull.

它们体型惊人，不过让这些鸭嘴龙看起来很酷是它那奇特头颅。

We now know that duckbills were among the most common dinosaurs in the area during the late Cretaceous.

我们知道鸭嘴龙是晚白垩纪这个区域最常见一类恐龙。