One swing of the tail scatters the pack. 它摆动一下尾巴就能驱散大群的恐爪龙。 Although Deinonychus is a nasty dude and he's got some pretty wicked weapons he still has a very light bird-like skeletal structure. 虽然恐爪龙非常残
Trapped in a thick grove of trees, Tenontosaurus is helpless. 被困在浓密的树林里腱龙显得孤立无援。 His immense weight and powerful tail, useless. 它庞大的身躯和强力的尾巴已无用武之地。 The Raptors attacks as a pac
Tenontosaurus was bigger and certainly heavier. 腱龙体型庞大且笨重。 Tenontosaurus didn't necessarily make a mistake. 它不一定是犯了致命的错误。 It was numbers that took him down. 它是败给了庞大的数量。 One dinosaur
A prehistoric watering hole. 一处史前水坑。 By using cutting edge technology, some of its fossilized secrets are scientifically decoded. 通过利用前沿科技,它的一些化石秘密如今已经被科学地揭开了。 Multiple species,
The excavation uncovered one set of remains, then another, then another. 挖掘工作发现了一具骨骸之后又一具之后再一具。 Soon, they had thousands of bones from multiple species. 很快就有了来自多个物种的数千块骨头。
There's nothing in the world today that looks like a Stegosaurus. 如今地球上没有什么动物长得和剑龙相似。 And it just was so peculiar with that long cone-shaped head and this big curved back and these short front legs and long back
Then, the excavation took an unexpected turn. 之后,挖掘有了意外转折。 Scientists uncovered a second set of remains near the adult stegasaurus. 科学家们在一个成年剑龙附近发现了第二具骨骸。 It was a second stegasaurus
Camarasaurus also owed its success to a set of long, spoon-shaped teeth that, paleontologists came to realize, could defoliate entire trees. 圆顶龙成功的另一个原因是(牙齿露出5厘米,含牙根8厘米)它们长长的匙状牙齿古生
They're not going to follow the Tenontosaurus because they don't want to keep him on high alert. 它们此刻不会跟踪腱龙了,因为它们不希望腱龙一直高度警惕。 They'll wait for nightfall and follow his blood trail, they'll know
In order to understand the hunting methods of Albertosaurus, paleontologists compared its brain design to that of modern animals. 为了了解阿尔伯特龙的狩猎方式,古生物学家将其脑部构造与现代动物进行比较。 The brain s
Scientists quickly discovered that these dinosaurs had all died at the same time. 科学家们很快发现了这些恐龙全部是同时死亡的。 Finding the remains in one place could mean only one thing. 在同一地点发现的遗骸只能说明一
What that small brain structure in Pachyrhinosaurus tells us is that the animals were probably not problem solvers. 肿鼻角龙很小的脑部结构告诉我们,这种动物很可能没有解决问题的能力。 They didn't have the capacity nece
The fact that Pachyrhinosaurus is found in so many different areas suggests that these dinosaurs had a remarkable ability to adapt to a variety of different environments. 肿鼻角龙在那么多不同的地方被发现,说明这种恐龙对不同环
It was a species of Tyrannosaur. 这是暴龙的一种。 That suggested to us, well, maybe these Tyrannosaur teeth are in fact from animals that are trampling the bodies of these things as they eat them. 那就表明,也许这些暴龙牙齿是它们
The next key feature was a pair of short, but powerful arms. 下一个关键特征是它短而有力的前肢。 Although the arms of Albertosaurus were small compared to its overall body size, they were still packed in muscle. 尽管阿尔伯特龙的
So when we find all these shed teeth of Albertosaurus in Pipestone Creek, it shows us that the Albertosaurus were scavenging, just as any decent meat eater will do, it's meat that doesn't fight back. 所以当我们在派泊斯通溪发现这么多阿尔
The horn of the Pachyrhinosaurus could have been as long as a meter. 肿鼻角龙的角可能有一米长。 Many paleontologists think it was shaped like a rhinoceros horn, but much larger. 很多古生物学家们认为它的形状和犀牛角相仿,
70 million years ago,Albertosaurus was the most fearsome hunter in North America. 七千万年前,阿尔伯特龙是北美洲最可怕的猎手。 It was one of the few dinosaurs that would take on the horned Arctic dinosaur. 它是少数敢于攻击
With the breaking up of the continents, the oceans moved closer to what is now North America, causing a dramatic increase in rain. 随着大陆的分离,海洋愈发靠近如今的北美洲,导致降水的急剧增加。 The herd is forced to the
Pachyrhinosaurus like pretty much all members of the Ceratopsian family have no weaponry from behind their neck backwards. 肿鼻角龙和角龙家族的所有成员一样,从颈部往后没有什么武器。 From their neck back, they're completel
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