研究人员发现猛龙新品种迅-凯发k8官网

研究人员发现猛龙新品种迅
文章来源:未知 文章作者:meng 发布时间:2010-03-22 01:51 字体: [ ] 
(单词翻译:双击或拖选)

a new species of 1, a relative of the famous velociraptor(迅猛龙) , has been discovered in inner mongolia by two phd students. the exceptionally well preserved(保藏的,腌制的) dinosaur, named linheraptor exquisitus, is the first near complete skeleton of its kind to be found in the gobi desert since 1972, and will help scientists work out the appearance of other closely related dinosaur species.

linheraptor is in the dromaeosauridae family of the carnivorous(食肉的) theropod(兽脚亚目的) 2 and lived during the late cretaceous(白垩纪) period. in addition to linheraptor and velociraptor, theropod dinosaurs include charismatic(神赐能力的,超凡魅力的) meat-eaters like tyrannosaurus rex(雷克斯霸王龙) and modern birds.

the two phd students, michael pittman from ucl (university college london) and jonah choiniere from george washington university (gwu), found the dinosaur sticking out of a cliff face during a field project in inner mongolia, china. their research is published online today in the journal zootaxa.

"jonah saw a claw 3(伸出,突出) from the cliff face. he carefully removed it and handed it to me. we went through its features silently but he wanted my identification first. i told him it was from a carnivorous dinosaur and when he agreed i'm surprised nobody in london heard us shouting," said michael pittman, a phd student in the ucl department of earth sciences who was the co-discoverer of the dinosaur.

"i've always wanted to discover a dinosaur since i was a kid, and i've never given up on the idea. it was amazing that my first discovery was from a velociraptor relative. my thesis is on the evolution and biomechanics of dinosaur tails but the carnivorous dinosaurs are my favourite and my specialty," he added.

at approximately 2.5 metres long and 25 kilograms, the researchers believe linheraptor would have been a fast, 4(敏捷的,灵活的) 5 that 7 on small horned dinosaurs(三角龙) related to triceratops(三角龙) . like other dromaeosaurids(奔龙) , it 8 a large "9 claw" on the foot, which may have been used to capture 6. within the dromaeosauridae family, linheraptor is most closely related to another recently discovered species tsaagan mangas.

linheraptor differs from all other dromaeosaurs(驰龙科) because of a 10 hole in front of the eye 11(眼窝,眼眶) called the antorbital fenestra(眶前孔) , which is a space in the 12 that sinuses(鼻窦) would have occupied. in linheraptor this triangular hole is divided into two cavities – one of which is particularly big.

"this is a really beautiful fossil and it documents a transitional(过渡期的) stage in dromaeosaurid evolution," said dr. xu xing, professor of palaeontology at the institute of vertebrate paleontology & paleoanthropology (ivpp).

linheraptor was found in rocks of the wulansuhai formation, part of a group of red sandstone rocks found in inner mongolia, china during a field expedition by the researchers in 2008. it is the fifth dromaeosaurid discovered in these rocks, which are famous for their 13 of uncrushed, complete skeletons.

the research was done as part of the inner mongolia research project, led by dr. xu, which aims to better understand the late cretaceous 14 of inner mongolia, china which is 15(类似的) but less well-studied than the well known late cretaceous ecosytem of outer mongolia. the research was funded by the geological society of london, the us national science foundation, the chinese national science foundation, and george washington university.



点击收听单词发音收听单词发音  

1 xusxp     
n.恐龙
参考例句:
  • are you trying to tell me that david was attacked by a dinosaur?你是想要告诉我大卫被一支恐龙所攻击?
  • he stared at the faithful miniature of the dinosaur.他凝视著精确的恐龙缩小模型。
2 87f9c39b9e3f358174d58a584c2727b4     
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西
参考例句:
  • the brontosaurus was one of the largest of all dinosaurs. 雷龙是所有恐龙中最大的一种。 来自《简明英汉词典》
  • dinosaurs have been extinct for millions of years. 恐龙绝种已有几百万年了。 来自《简明英汉词典》
3 e7480908ef1e5355b3418870e3d0812f     
v.(使某物)伸出,(使某物)突出( protrude的现在分词 );凸
参考例句:
  • he hung his coat on a nail protruding from the wall. 他把上衣挂在凸出墙面的一根钉子上。
  • there is a protruding shelf over a fireplace. 壁炉上方有个突出的架子。 来自辞典例句
4 ix2za     
adj.敏捷的,灵活的
参考例句:
  • she is such an agile dancer!她跳起舞来是那么灵巧!
  • an acrobat has to be agile.杂技演员必须身手敏捷。
5 11vza     
n.捕食其它动物的动物;捕食者
参考例句:
  • the final part of this chapter was devoted to a brief summary of predator species.本章最后部分简要总结了食肉动物。
  • komodo dragon is the largest living lizard and a fearsome predator.科摩多龙是目前存在的最大蜥蜴,它是一种令人恐惧的捕食性动物。
6 g1czh     
n.被掠食者,牺牲者,掠食;v.捕食,掠夺,折磨
参考例句:
  • stronger animals prey on weaker ones.弱肉强食。
  • the lion was hunting for its prey.狮子在寻找猎物。
7 30b08738b4df0c75cb8e123ab0b15c0f     
v.掠食( prey的过去式和过去分词 );掠食;折磨;(人)靠欺诈为生
参考例句:
  • remorse preyed upon his mind. 悔恨使他内心痛苦。 来自《现代英汉综合大词典》
  • he had been unwise and it preyed on his conscience. 他做得不太明智,这一直让他良心不安。 来自辞典例句
8 xuyyq     
adj.疯狂的;拥有的,占有的
参考例句:
  • he flew out of the room like a man possessed.他像着了魔似地猛然冲出房门。
  • he behaved like someone possessed.他行为举止像是魔怔了。
9 kpbziq     
n.巨额利润;突然赚大钱,发大财
参考例句:
  • investors are set to make a killing from the sell-off.投资者准备清仓以便大赚一笔。
  • last week my brother made a killing on wall street.上个周我兄弟在华尔街赚了一大笔。
10 7m1wc     
adj.三角(形)的,三者间的
参考例句:
  • it's more or less triangular plot of land.这块地略成三角形。
  • one particular triangular relationship became the model of simone's first novel.一段特殊的三角关系成了西蒙娜第一本小说的原型。
11 jw9wm     
n.窝,穴,孔,插座,插口
参考例句:
  • he put the electric plug into the socket.他把电插头插入插座。
  • the battery charger plugs into any mains socket.这个电池充电器可以插入任何类型的电源插座。
12 cetyo     
n.头骨;颅骨
参考例句:
  • the skull bones fuse between the ages of fifteen and twenty-five.头骨在15至25岁之间长合。
  • he fell out of the window and cracked his skull.他从窗子摔了出去,跌裂了颅骨。
13 glnzyu     
n.保护,维护,保存,保留,保持
参考例句:
  • the police are responsible for the preservation of law and order.警察负责维持法律与秩序。
  • the picture is in an excellent state of preservation.这幅画保存得极为完好。
14 wq4xz     
n.生态系统
参考例句:
  • this destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
  • we all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。
15 aldyq     
adj.相似的;类似的
参考例句:
  • the two situations are roughly analogous.两种情況大致相似。
  • the company is in a position closely analogous to that of its main rival.该公司与主要竞争对手的处境极为相似。
上一篇: 下一篇:
tag标签: species dinosaur
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片
最新评论
网站地图