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Looking at the geology of the dig site, Paleontologists could see that the bones had been washed into their final resting place. 根据挖掘现场的地质情况,古生物学家们能看出来这些骨头是被冲到它们最后的埋葬地的。
When the Pachyrhinosaurus bodies came to the bend in the river the momentum of the water push their carcasses to the outer edge of the bend. 当肿鼻角龙的尸体来到河流的转弯处,水流的动力将它们的尸体冲向河流转弯处外缘
The thing about extinction events is that, of course they're very bad for the animals that go extinct, but they open up a door of opportunity for a lot of other animals and plants. 其实就灭绝事件来说,当然对走向灭绝的动物来说很糟
The male realizes that the female will not be responsive as long as her offspring is alive. 雄性意识到只要小玛君龙还活着雌性就不会有反应。 He knows he's got to get rid of that baby. 它知道必须得先除掉幼崽。 In his b
Albertosaurus hunted in small groups of up to five. 阿尔伯特龙小群狩猎,每群多可达五头。 A herd of Pachyrhinosaurus would have been more than capable of standing their ground against a single Albertosaurus. 一群肿鼻角龙面对一
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
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
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
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
What makes a Raptor so incredibly dangerous is that they're built like ninjas. 迅猛龙之所以如此危险,是因为其身体构造像忍者一样。 They're fast, they're strong, they're agile, they've got razor sharp teeth and these teeth curv
Alone or in a group, this dinosaur's greatest strength was its colossal bulk. 无论是单独或群体的腱龙,最大的优势来自其庞大的身躯。 But despite its staggering power, the Tenontosaurus had two inherent weaknesses. 但尽管其力
The Allosaurus make a very wise decision to abandon the Stegosaurus and go for the Camarasaurus. 它们做出了非常明智的决定放弃了剑龙,开始攻击圆顶龙。 That Stegosaurus just freed his tail and killed one of them. 剑龙刚刚解
In 1971, paleontologists discovered a massive hole in the ground in Wyoming. The cave opening had acted as a trap, unwary creatures fell to their death. 在1971年,古生物学家在怀俄明发现了地上的一个巨洞。这个洞口如同一个陷
During times of drought, animals are stressed to the limit. 在干旱时期,动物们的压力已至极限。 Normal behavior is basically thrown out the window and it becomes a no holds bar fight for survival. 通常的行为都已不再适用,这
We have been working in the quarries, and we were starting to get familiar with how the bones were situated. 我们在石场工作,我们开始对骨头是如何放置的熟悉起来。 And one of the students that was with the College of Eastern U
Their teeth were recurved which means they start to point backwards and they were also very blade-like and had serrated edges. 它们的牙齿后弯曲,这意味着它们开始指向后方,它们也是很像利刃边缘呈锯齿状。 Three tons
He's got a big, thick bull-dog head and it's perfectly designed for grasping prey and crushing it. 它有着牛头犬一样又大又壮的脑袋,其设计非常适合抓住并且咬碎猎物。 His teeth are also designed to take a lot more pressur
Since the discovery of the La Brea pits, paleontologists have removed and catalogued over 1 million bones representing over 230 different species of animals. 从发现拉布雷亚沥青坑以来,古生物学家已经移出并编目了超过一百万个
At one of the worst scenes of slaughter ever unearthed, a top predator, a panicked stampede, and a natural disaster converge. 这是出土的最惨烈的大屠杀之一,一种顶级掠食者,一次恐慌奔逃,加上一次自然灾难的聚集。
Modern bears are designed to hibernate. 现代熊要进行冬眠。 In the Ice Age, there were no seasonal weather changes, so bears ate the same amount all year round, giving it an insatiable need to hunt. 在冰期,没有季节性的气候变化,