Allosaurus was really the first of the truly big meat-eating dinosaurs that was found and was the one from fairly complete remains. 异特龙真的是被发现的第一种大型肉食恐龙而且其骨骼保存相当完整。 It was the Tyrannosaurus
Well, the answer is amber - fossilized tree sap. 答案是琥珀,树液的化石。 We find all kinds of prehistoric insects, plants, and even small reptiles trapped within amber. 我们能发现琥珀里面裹着各种史前昆虫、植物甚至小型
The landscape of modern Utah scarcely resembles the landscape of 156 million years ago, when Allosaurus ruled supreme, there were fewer mountains. 现代犹他州的地形跟一亿五千六百万年前大相径庭,在异特龙称霸之时,那里没
I don't think Allosaurus played well with others. 我觉得异特龙不会与其它恐龙好好相处。 And so it makes sense to me that it would attempt to kill any competitor in its territory. 所以我觉得它会试图杀死任何进入它领地的
The sperm whale hits him dead in the centre of his body throwing the Megalodon's enormous weight in a tumble motion under the ocean. 抹香鲸结结实实地撞中它的身体中间,把巨齿鲨庞大的身躯撞得在海洋中翻滚。 The Megalod
And they have the blemish both front and rear from a facet where the opposite tooth interlocked with it. 在牙齿前后的齿面都有缺陷就是与对面牙齿相交错的地方。 What happens is that the root is anchored well into the lower jaw.
The Brygmophyseter was not without a weakness. 四贺鲸不是没有缺点。 Unlike Megalodon, it was unable to re-grow lost teeth. 它不像巨齿鲨,它无法长出掉落了的牙齿。 It did, however, have another weapon at its disposal. 但是,
Sperm whales form close family units for protection and to nurture their offspring. 抹香鲸形成亲密的家庭单元来保护自己并且养育它们的后代。 Great white sharks relate only during mating and will actually eat their young. 大白
The biting sperm whale was powered by the up and down motion of its powerful tail fluke allowing it to reach speeds of over 25 miles per hour. 噬抹香鲸用其有力的尾鳍上下摆动来获得动力,其速度能达到每小时25英里。 The l
There's a huge difference in the fact that the whales would have sonar and could use that to detect food. 鲸类能够用声纳来探测食物的事实带来了巨大区别。 Megalodon on the other hand doesn't have that advantage, 而巨齿鲨就没有
The Brygmophyseter uses its flipper to steer, it is literally rudderless without it. 四贺鲸用它的鳍肢来控制方向,没有它真的就没有方向了。 There are 44 teeth in its jaws. 它的口中有四十四颗牙齿。 The front teeth a
Scientists believe the problem was magnified by a fierce new predator who appeared on the scene, competing for what scarce food did remain. 科学家们相信让问题加剧的是新出现的一种厉害的掠食者,争夺所剩无几的食物。 O
The sperm whales now deploy their most deadly weapon, T-Rex sized teeth. 抹香鲸们现在开始动用其最致命的武器,霸王龙级别的牙齿。 Individually, these whales are only a bother to something as large as Megalodon. 单打独斗,这
Ceratosaurus, for 20 million years, he'd been one of the unchallenged predators at the top of the food chain. 角鼻龙,长达两千万年间,他高居食物链的顶端,无可匹敌。 But by using new science and re-examining the evidence at
Everything that happens to an animal after it dies destroys information and that's the reason why in the end so little is left. 动物死后发生的每件事都会销毁信息,这就是最后剩不下什么的原因。 But think of the luck that w
One of the things that tells us that it's actually a more primitive dinosaur. 这一点说明它是一种较为原始的恐龙。 Now, the third and forth fingers are very small, probably not very functionally effective. 它的第三和第四只手指很
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. 角鼻龙,虽然是很凶残的掠食者,但肯定不适合攻击在石场发现的成年剑
We now believe that Ceratosaurus may have been an ambush predator. 我们现在相信角鼻龙可能是一种伏击掠食者。 Hunting in pairs would allow this meat eater to take on bigger game or to set up an ambush to capture smaller fast moving
His favorite hunting tactic is to come from below and behind his potential prey. 它最喜欢的狩猎策略就是从它潜在猎物的下方或者后面下手。 As the Meg closes in on the whale, he descends, in order to surprise him from below. 随着
One bite full of that bacteria and Nanotyrannus is dead from a massive infection, if the fight doesn't kill him first. 满是细菌的一咬,矮暴龙就算不会死于战斗,也会死于严重感染。 He moves in cautiously, using his height ad
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