在大約7700萬年前的阿根廷巴塔哥尼亞的森林裡，傳來了一陣陣的聲音。地面隆隆作響，樹木搖搖欲墜。一個巨大的黑影慢慢走近。蜥蜴從地下的洞裡鑽了出來，誰也不知道名字的小哺乳動物快速地跑進灌木叢中。像小鳥一樣的翼龍從棲息的樹上驚醒過來，展翅高飛。一隻小齧齒動物被噪音吵醒了，它很困惑，慢吞吞地爬出了洞穴。它抬起頭來，一個巨大的陰影籠罩過來，陰影比它見過的任何生物都要大。陰影的脖子向地面彎下來，小齧齒動物以為自己完蛋了。然而，快速瞟了它一眼後，這隻長頸蜥腳類恐龍走到一棵樹前，撕掉了一大塊樹葉和樹枝。當恐龍開始第一口的晚餐咀嚼之旅時，那隻小齧齒動物迅速地跑開了。
現在，你們中的許多人一定在尖叫：「我知道這個！肯定是阿根廷龍。」不，下次再試試。這種生物實際上被稱為施氏無畏龍，是泰坦龍的一種，與阿根廷龍相似，它也是生活在阿根廷的一種超大型蜥腳類動物。不過，除此之外，這兩種恐龍毫不相同，不應混淆。阿根廷龍遠比無畏龍出名，但無畏龍也是一種神奇的恐龍。
施氏無畏龍生活在7700萬年前的阿根廷巴塔哥尼亞，俗稱長頸恐龍。它可以長到9米高，65噸重。它是一種植食動物。這種生物的龐大身軀使得它需要大量的能量來維持自己的生存。說到施氏無畏龍的飲食習慣，估計它花了大半輩子的時間吃東西。
古生物學家雖然只發現了兩具施氏無畏龍的骨架，但它們非常有價值。這是因為這兩具骨架，尤其是2005年發現的那具，恐龍骨架的完整度超過了70%，比正常化石的完整度高出許多。整個骨架確實提供了很多關於恐龍的信息，因此古生物學家能夠對施氏無畏龍進行計算和測量，很好地重建了施氏無畏龍模型。而其他的恐龍研究很難做到這一點。化石這麼完整很可能是因為洪水淹沒了屍體，所以它被迅速掩埋並保存下來。
In the thin forest of Patagonia, Argentina, about 77 million years ago. The ground rumbled, the earth shook, and the forest shuddered as something big, something enormous, approached the area. From their holes in the dirt, lizards scampered away, tiny mammals no one knew the name of followed suite. A small bird like pterosaur flew past, disturbed from its perch on a tree where it was resting. One small rodent was slow, having woken up by the noise and was confused. As it looked up, a humongous shadow loomed over it, bigger than any creature it’s ever met. The huge creature loomed over, its neck bent down towards the ground, and the rodent thought that it was over. However, after a quick inspection, the huge dinosaur walked away to a tree, and tore off a huge chunk of leaves and twigs. The rodent sprinted quickly away as the long-necked sauropod took its time to chew down the first bite of its dinner.
Now, many of you must be screaming: I know this one! It’s definitely the Argentinosaurus. Nope, try again next time. This creature is actually called Dreadnoughtus, and similar to the Argentinosaurus, it was a sauropod that lived in Argentina. However, apart from that these are different dinosaurs and should not be confused. Argentinosaurus is way more famous than Dreadnoughtus, but the latter is an amazing dinosaur too.
The Dreadnoughtus lived around 77 million years ago in Patagonia Argentina. It can grow up to 9 meters in height, and 65 tons in weight. It was a sauropod, meaning that it was a long-necked dinosaur. It was an herbivore, and possibly ate a lot of plants to maintain its large body. Dreadnoughtus are categorized as one of the titanosaurs, a group of extra-large sauropods which includes Argentinosaurus, proving their similarity. The extreme size of this creature makes it require a lot of energy to sustain itself. And due to its diet, it wouldn’t be surprising that the Dreadnoughtus spent most of their life eating.
There are only two specimens of Dreadnoughtus that have been found, but they are very valuable specimen. This is because that the two specimens, especially the one found in 2005, are well above the completion of a normal dinosaur specimen. Over 70%, the whole skeletons really gave us a lot of information on the dinosaur, and we are able to therefore make calculations and measurements that is too difficult on other dinosaurs, and due to this fact we reconstructed the Dreadnoughtus well. The high preservation number is probably because of a quick flood that covered the body so it was buried quickly and preserved.