尽管有许多证据表明鸟类是从陆生兽脚亚目恐龙进化而来的，但一些科学家仍然表示怀疑。
Although many lines of evidence indicate that birds evolved from ground-dwelling theropod dinosaurs, some scientists remain unconvinced.
古生物学家正在对鸟类的兽脚亚目最近亲进行仔细研究，以寻找这种转化的线索。
Paleontologists are now carefully studying the closest theropod relatives of birds for clues to how this transition occurred.
科学家们一直认为羽毛最初出现在兽脚亚目恐龙的某个早期成员身上，该成员最后进化为鸟类。
Until recently it was thought that feathers first appeared in an early member of the lineage of theropods that leads to birds.
可能已经是时候最终接受‘始祖鸟’只是又一只在侏罗纪时期飞来飞去的长有羽毛的像鸟类的小兽脚亚目食肉恐龙了。
Perhaps the time has come to finally accept that archaeopteryx was just another small, feathered, bird-like theropod fluttering around in the Jurassic.
在与现代鸟类亲缘关系较为接近的兽脚亚目恐龙身上存在一块特殊的楔形腕骨，正是这块腕骨的存在它们的前肢才能得以弯曲。
In the theropods that were closely related to living birds, a particular wristbone was wedge-shaped, allowing them to bend their hands.
在有史以来最长的一个热带鸟类环志和无线追踪项目中，超过250多个不同种类的5万只鸟被捕获，并在他所建立的站点绑上脚环。
In one of the longest tropical bird banding and radio-tracking projects ever, more than 50,000 birds (over 250 different species) have been captured and banded at stations he has established.
从二十世纪七十年代开始，在古生物学圈中，关于鸟类是否是就是由一种被称作兽脚亚目的双脚恐龙群组进化而来的争论一直喋喋不休。
Starting in the 1970s, a growing number of paleontologists argued that birds had evolved from a two-legged group of dinosaurs called theropods.
当然，对鸟类来讲因为没有手，所以这里是指他们比较常使用的那只脚。
Of course, for these birds, it is their foot that is used more as they don't have hands.
第三，尽管传统的杀虫剂的确会给鸟类带来损害，但是用过去推测未来的想法是站不住脚的。
And third while it's certainly true that traditional pesticides have been destructive to birds it's incorrect to project this history into the future.
第三，尽管传统的杀虫剂的确会给鸟类带来损害，但是用过去推测未来的想法是站不住脚的。
And third, while it's certainly true that traditional pesticides have been destructive to birds, it's incorrect to project this history into the future.
这些羽毛极有可能属于一只年幼的非鸟兽脚类恐龙，意即样子更接近伶盗龙或者暴龙，而非现代鸟类。
The feathers most likely belonged to a baby nonavian theropod, meaning it looked more similar to a velociraptor or Tyrannosaurus rex than to a modern bird.
四翼兽脚类恐龙有羽毛恐龙的发现了所谓的，这些被认为是失踪的恐龙和鸟类之间的联系。
Four Winged Feathered dinosaurs called Theropods have been found; these are considered to be the missing link between dinosaurs and birds.
摘要：对中生代鸟类及与其亲缘关系密切的非鸟兽脚类腹肋腔的大小和形态进行了研究。
Here we investigate the size and morphology of the gastral basket in non-neornithine Mesozoic birds and their close non-avian dinosaur relatives.
兽脚类是恐龙家族很重要的一支，鸟类就是从它们中起源的。
Theropods are a very important group of dinosaurs because it is from this group that birds are known to originate.
自恐龙复原图从1970年以来，许多研究指出现代鸟类极可能是兽脚亚目恐龙的直系后代。
Since the dinosaurs recovery plans since 1970, many studies have pointed out that modern birds most likely suborder Theropoda a direct descendant of dinosaurs.
自恐龙复原图从1970年以来，许多研究指出现代鸟类极可能是兽脚亚目恐龙的直系后代。
Since the dinosaurs recovery plans since 1970, many studies have pointed out that modern birds most likely suborder Theropoda a direct descendant of dinosaurs.
应用推荐