But they were no match for the real giants of the era, Prosauropods.

但它们都不是这个时期真正的巨人，原蜥脚类。

But paleontologists believe that ninjatitans were sauropods with bodies like brontosaurus.

但古生物学者认为忍者泰坦龙是和雷龙的身体一样的蜥脚类动物。

But the colossal crown goes to a group of sauropods called titanosaurs.

但巨冠要颁给蜥脚类恐龙中的泰坦龙。

Step 1: discover and dig A team from the Natural History Museum of Los Angeles County first spotted the sauropod dinosaur they call Gnatalie in 2007 after erosion revealed a single leg bone beside a bluff in southeastern Utah.

、挖掘2007年，犹他州东南部一座悬崖旁，有一根腿骨因侵蚀而暴露出来后，洛杉矶自然史博物馆的一个团队首次这只蜥脚类恐龙，他们称为蚋塔。

One of the curious things about sauropods is that they did have a swelling in the spinal cord, in the neighborhood of their pelvis.

蜥脚类恐龙的处在于它们在骨盆附近的脊髓处有个突起。

Certainly not as sort of plodding as what we think many of the long-necked Sauropods were like.

当然也不是我们想象中那些长颈蜥脚类那样蹒跚踱步。

The real super-stars of the show are the sauropods.

本期视频的真正超级明星就是蜥脚类恐龙。

Its momentum literally drives it directly under the foot of the massive Sauropod.

巨大的惯性把它直接送到这硕大的蜥脚类恐龙脚下。

And it's this anatomy that enabled Prosauropods to evolve into the largest dinosaurs of all time.

正是这种解剖学使原蜥脚类进化成历史上最大的恐龙 。

Unfortunately for this sauropod, it's unaware of the mud trap that lies just beneath the cracked and dry upper crust.

这头蜥脚类恐龙很不幸，它没有注意到这个烂泥陷阱就藏在干硬开裂的表层下。

Sauropods are dinosaurs that walked on four legs, had long necks and tails and ate plants.

蜥脚类恐龙四肢行走，脖子和尾巴都很长，属草食性恐龙。

Reaching enough food wasn't a problem for the titanosaurs and other sauropods either.

获得充足的食物对泰坦龙和其他蜥脚类恐龙来说不成问题。

Agility-wise Tenontosaurus is certainly much better off than, any of the Ceratopsians or Sauropod dinosaurs.

任何角龙类和蜥脚类的恐龙都没有腱龙灵活。

Allosaurus was feeding on sauropods - animals that are multi-times the size of our largest mammals today, the elephant.

异特龙捕食蜥脚类恐龙，这些动物的体型是如今最大的哺乳动物大象的好几倍。

Allosaurus's feeding on sauropods, animals that're multi-times the size of our largest mammals today, the elephant.

异特龙捕食蜥脚类恐龙，蜥脚类恐龙可比如今陆地上最大的哺乳类动物大象还要大好几倍。

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的成年剑龙或是那种长颈的蜥脚类恐龙。

From where the sauropod stood, there would have been no early warning signs.

从蜥脚类恐龙所在的位置来看，不会有任何预警信号。

So birds are Saurischian dinosaurs, but are all Saurischian dinosaurs birds?

那么鸟类是蜥脚类恐龙，但是所有蜥脚类恐龙都是鸟类吗？

A scene in the " Deserts" episode highlights how animators used this approach to show viewers the unexpected: two sauropods in the genus Dreadnoughtus wrestling and stabbing each other with deadly looking arm spines.

“ 沙漠” 剧集中的一个场景突出动画师如何使用这种方法向观众展示出乎意料的事情：两只无畏龙属的蜥脚类动物用看似致命的臂刺搏斗和刺伤对方。

From fossils on Earth, in the eastern part of South Africa, they've put together a picture of a Sauropod relative that's been given the name Ledumahadi Mafube.

通过地球上， 特别是南非东部的化石，他们拼凑出一幅与蜥脚类恐龙相关的图景， 并将其命名为莱杜马哈迪·马富贝。