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Nanotyrannus is one of my very favourite dinosaurs.
矮暴龍是我非常喜歡的一種恐龍。
The name actually means pigmy tyrant.
它的名字意思其實(shí)是小暴君。
And it's pretty aptly named because this was a one mean dinosaur.
這名字挺恰當(dāng)，因?yàn)檫@種恐龍絕非易于之輩。
A Nanotyrannus sized Tyrannosaur would in my opinion be one of the most fearsome creatures that ever lived,
矮暴龍大小的霸王龍?jiān)谖铱磥頃怯惺芬詠碜羁膳碌膭游镏唬?/div>
because it combines the firepower of T-Rex on a smaller scale with a great speed ability.
因?yàn)檫@結(jié)合了霸王龍的火力，而體型較小就會有更快的速度。
Nanotyrannus wasn't just one mean dinosaur, it's also one of the most controversial.
矮暴龍不僅不是易于之輩，它也是最具爭議的恐龍之一。
It was originally named after a prehistoric skull found in Montana in 1942.
最早是根據(jù)1942年在蒙大拿發(fā)現(xiàn)的一個史前頭骨命名的。
Since then, experts have differed over whether Nanotyrannus is its own species or just a juvenile T-Rex.
從那時起專家們對矮暴龍是獨(dú)立物種還是幼年霸王龍有著不同意見。
One of the very difficult things in all of dinosaur paleontology, just because that the animals are so rare, is to be able to understand this thing.
這是恐龍古生物學(xué)中很困難的事情之一，因?yàn)檫@些動物鮮被發(fā)現(xiàn)，要想能夠真正了解并不容易。
I mean, is this a new species or is this just a juvenile of the species we already have?
這到底是一個新的物種還是我們已知的物種的幼年?duì)顟B(tài)？
Those who believe Nanotyrannus is its own species cite key differences between it and T-Rex.
相信矮暴龍是一個獨(dú)立物種的人列出了它與霸王龍之間的主要區(qū)別。
One is tooth design.
一個是牙齒設(shè)計(jì)。
Well, one of the remarkable differences between Nano T and a full blown adult T-Rex is the structure of the teeth.
在矮暴龍和猛力的成年霸王龍之間一個最顯著的區(qū)別就是其牙齒的結(jié)構(gòu)。
Tyrannosaurus Rex has these large, we sometimes call them, banana teeth.
霸王龍的牙齒很大，我們有時候把它們叫做香蕉牙。
And they're certainly sharp, and pointy, and have serrated edges, but they're not really thin, like the blade of a knife.
它們當(dāng)然很鋒利尖銳，邊緣還有鋸齒，不過并不薄，不像刀刃那樣。
Rather they're more expanded like a banana.
它們更加寬大，像是香蕉。
Whereas a Nano T what we see are teeth that are indeed much more knifelike.
然而我們看到矮暴龍的牙齒其實(shí)更像刀刃。
They're much flatter, a little bit more sharply turned back or recurved, the kinds of teeth we see in other kinds of predatory dinosaurs.
它們更平，向后的回彎要更急一些，是我們在別的掠食恐龍那里見到的那類牙齒。
This suggests that while a T-Rex would crush bone, Nanotyranus would tear through flesh in a slicing action.
這表明霸王龍會咬碎骨頭，而矮暴龍則會用劃切動作割下血肉。
There's up to 17 teeth in this part of the upper jaw in Nanotyrannus and there's only 12 or 13 in Tyrannosaurus Rex.
矮暴龍上顎的這部分有多達(dá)十七顆牙齒，而雷克斯暴龍只有十二到十三顆。
Well, that suggests to me that these are different species of animals.
這在我來看說明它們是不同物種。
And that these species are in fact valid.
對這些物種的分類有效。
But other paleontologists, conclude something different.
但其他古生物學(xué)家們則有不同意見。
