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Ceratosaurus, although a pretty nasty predator, was not really suited for taking on adult size Stegosaurus or those long-necked sauropods found at the site.
角鼻龍，雖然是很兇殘的掠食者，但肯定不適合攻擊在石場發現的成年劍龍或是那種長頸的蜥腳類恐龍。
Certainly it could scavenge off the bodies if they were really dead.
當然它們死后角鼻龍也許會吃掉尸體。
But most of the teeth marks in the bone are much wider than the teeth of a Ceratosaurus and they went much deeper into the bones than I think a Ceratosaurus could've bitten.
但是骨頭上的多數牙印要比角鼻龍的寬很多，而且骨頭上的痕跡也比我認為角鼻龍能咬得要深得多。
So there is no way Ceratosaurus was the predator that left the majority of these teeth marks.
所以角鼻龍絕不是那個留下大部分牙印的掠食者。
Ceratosaurus may not have been capable of biting through bone, but there's no doubt that it was a successful predator that killed at will.
角鼻龍可能沒法咬穿骨頭，但是它毫無疑問是成功的掠食者。
Its remains have been found around the world which is unusual.
它的遺骸在全世界都被找到這一點很不尋常。
This prehistoric monster literally dominated the earth.
這種史前怪物的的確確統治過地球。
We know it lived in western North America, but recent discoveries have shown it also lived in Europe, in Portugal and Spain.
我們知道它生活在北美西部，但最近的發現表明它也生活在歐洲、葡萄牙和西班牙。
Post relatives of it lived in South America and there's even trace that it might've even lived in Africa.
它后來的親戚還在南美生活過還有痕跡表明它可能在非洲生活過。
So, sort of wide ranging dinosaur.
真是分布廣泛的恐龍。
Ceratosaurus's maybe found all around the world, but it's still a very rare dinosaur to come across.
角鼻龍可能在全世界都有分布，但是也還是一種很少能碰到的恐龍。
Trying to decipher what had happened here, paleontologists have to consider the question:
要想破譯這里發生過什么，古生物學家們就得考慮下面這一問題：
"Did these dinosaurs hunt in packs?"
“這些恐龍是否成群獵食？”
There's no real evidence yet that it lived together in groups.
現在沒有實物的證據表明它們成群生活在一起。
But these horns tell us something. These horns, they are not for attack.
但是這些角能說明一些問題。這些角，它們不是用來攻擊的。
They are for display.
它們是用來展示的。
And if you've got a display structure, that means, at least on occasion, you get together and you show off to each other.
要是你身體某部分是用來展示的，那意味著，起碼偶爾，你們會聚在一起對彼此炫耀。
"See, look at me. I've got the biggest horn."
“看吶，看我，我的角最大”
So at least some of the time, these guys got together in groups.
所以這些家伙起碼會偶爾聚在一起。
When you look at the moderate size of a Ceratosaurus and then you compare that to the enormous sizes of the herbivores that lived with it, I can only draw one conclusion and that is these predators needed to hunt cooperatively in groups.
看到角鼻龍中等大小的體型再跟同樣在那里生活的龐大食草恐龍相比，我只能得出的一個結論就是這些掠食者需要成群合作狩獵。
There's just no way they could take down large herbivores by themselves.
它們自己肯定沒法干掉那么大的食草恐龍。
The fact that so few had been found makes it hard to say with certainty that they hunt in groups, but I have no problem believing that they did simply from a survival state of point.
找到的東西很少的這個事實讓人無法肯定地說他們成群狩獵，不過從生存的角度看我覺得這樣非常可信。
To further understand, CAT scans were conducted on the skull of Ceratosaurus.
為了進一步了解，對角鼻龍的頭骨進行了CAT掃描。
The results were intriguing.
結果很有趣。
