墨芷汀澜
新浪微博
微信
当前位置:墨芷汀澜网 » 二手房

时尚的发型 Fashionable Hair

双旦

礼遇记

作者 Author: Hank Sun

此图来自网络 This picture came from the internet

    

       一阵劲风从南极洲的树林里刮过,吹得动物们瑟瑟发抖。虽然现在还是夏天,但是随着季节的变化,我们今天所知的南极洲也逐渐转寒。一只小型哺乳动物迅速地爬过森林的地表,他正要钻进一个倒下的枯树洞时,一只大嘴把它叼了起来。冰脊龙一口就把它吞了下去,再环顾四周,看看有没有更多的吃的。过冬永远不容易。

 

    冰脊龙生活在早期侏罗纪时期的南极洲,距今约1亿9千4百万年至1亿8千8百万年左右。它们约为7米长,2米高,体重500公斤左右。南极洲当时非常冷,而恐龙又不适合生活在寒冷的气候中。所以人们可能会思考,它们怎么活下来的?事实上,虽说当时的南极洲离赤道的距离比现在近了不少,但是还是有一段距离的,所以冬天仍然很寒冷。还有一个更重要的原因,当时侏罗纪时期的海洋暖流正好流过南极大陆,使得沿海地区以及距离海边几公里的陆地都十分温暖,给予了恐龙们生活空间。

 

    在当时的条件下,冰脊龙的确是个大个子。侏罗纪早期的恐龙仍然在一个进化演变的过程中,大个子冰脊龙是当时的顶尖掠食者。大部分动物在寒冷的环境里都会有更小的身体或更好的御寒方法。当时许多南极洲的生物都比他们的近亲小不少。比如说一种双型齿翼龙,不比渡鸦大多少。这就证明了冰脊龙一定是一种进化成功的生物,因为它在寒冷的地方能长得如此之大。

 

    冰脊龙的头上有一个冠。这个冠不像其它的恐龙一直延伸到头的后部,而是在中间往上翘,使得他看上去像猫王(Elvis Presley)的发型。这使得冰脊龙拥有了Elvisaurus的外号。他/它们俩都是他/它们所属时代的巅峰形象,并留下了许多值得我们去学习和研究的遗产。


信息来源:

https://en.wikipedia.org/wiki/Cryolophosaurus

http://www.prehistoric-wildlife.com/species/c/cryolophosaurus.html

此图来自网络 This picture came from the internet

此图来自网络 This picture came from the internet


As the cool breeze brushed through the forest, the animals shuddered. They had a pretty warm time this summer, but as the seasons changed, Antarctica, as we call it today, slowly got colder and colder. A small mammal scuttered on the forest floor, but before it could crawl into a hole in a fallen tree trunk, a large mouth picked it up. With one gulp, the mammal was sent down its throat, and the Cryolophosaurus looked around, hoping to find more food. Winter is never easy to survive.

 

The Cryolophosaurus lived in Antarctica during the early Jurassic, around 194 to 188 million years ago. They can grow to 7 meters in length, 2 meters in height and 500 kilograms in weight. Antarctica was extremely cold for creatures to live in even back in the Jurassic, as dinosaurs are not exactly well adapted to cold weather, one might wonder how they survived on the continent. The truth is, warm sea currents exists around the coasts of Antarctica, which may bring warmer weather along the coast and a few kilometres in, thus creating a habitable region for dinosaurs to thrive in.

 

 

Its size is truly huge for its time and location. Early Jurassic is a period of time when dinosaurs are still growing to be bigger, so Cryolophosaurus would be the apex predator of the time. Antarctica at the time was a lot warmer, as it was much close to the equator, but still a good distance off. That means that the temperature in winter will be pretty cold. In cold regions, animals tend to either reduce size or have a way of preserving energy. Many creatures were smaller than their cousins there. Such as a Dimorphodontid, a small pterosaur no larger than a modern raven. So Cryolophosaurus being so big means it must have been a successful creature.

 

 

The Cryolophosaurus have an interesting crest on its forehead. The Crest is not like other ones that stretch all the way to the back of the head. Instead, it curls up towards the sky. This crazy “hairstyle” gave the Cryolophosaurus the nickname ‘Elvisaurus’, as the crest’s shape looks like the singer Elvis’ hair. Both of them were the top of its time and left a lasting legacy, for us to study and learn from.


Work cited:

https://en.wikipedia.org/wiki/Cryolophosaurus

http://www.prehistoric-wildlife.com/species/c/cryolophosaurus.html


此图来自网络 This picture came from the internet


原创作品,欢迎关注!

Original work, Subscribe!!!