祖龍類 的英文怎麼說
中文拼音 [zǔlónglèi]
祖龍類
英文
archosaur-
The feathers attached to the arms and the tail evidently possess the structures of " modern feathers ", which consisting of the central shafts ( rachis ) and parallel barbs. dromaeosaurids are unusual group of maniraptoran theropods. they share many similar or the same features with archaeopteryx or other primitive birds, such as : u - shaped furcula, uncinate process, laterally facing glenoid of shoulder girdle, comparatively long forelimb, large semilunate carple, retroverted pubis, ascending process of astragalus, and " modern feathers " with rachis and barbs etc. these facts indicate not only that dromaeosaurids had developed many bird - like characters in course of the advanced maniraptorans toward birds, but also that there seemed to be the co - evolutionary trend between the feathers and the skeletal bones
奔龍類是一類較為特殊的手盜龍類（ maniraptora ） ，它具有許多與始祖鳥archaeopteryx甚至其它早期鳥類相似或接近的特徵，主要表現在：叉骨u形與始祖鳥和孔子鳥類的相同，背肋鉤狀突在孔子鳥類和個別反鳥類中也存在，肩臼窩絕大部分指向側方類似於始祖鳥，肩胛骨與烏喙骨間的夾角非常接近90也和始祖鳥的相似，前肢從比例上講顯得較長，大的半月形腕骨使肘部能向側方折過來，恥骨伸向後下方，距骨上升突與原始鳥類中的為同源結構，羽毛已有顯著的分化且具備了現代羽毛的基本結構等等。Experts are still unsure about the ancestry of pterosaurs. they are currently classified as belonging to a group of reptiles known as archosaurs, which include crocodiles, dinosaurs and birds
專家學者對于翼龍究竟如何演進而來仍然沒有定論。 ?們目前被分類歸在祖龍類，這一種爬蟲類包括鱷魚、恐龍和鳥類。Today this group, the tetrapods, encompasses everything from birds and their dinosaur ancestors to lizards, snakes, turtles, frogs and mammals, including us
今日，這群所謂的四足動物包括了許多物種，從鳥類及?們的恐龍祖先，到蜥蜴、蛇、烏龜、青蛙、哺乳類，當然也包括我們人類。Many scientists believe that dinosaurs and birds evolved from a common ancestor
許多科學家認為，恐龍與鳥類是由同一個祖先進化而來的。分享友人