archaeopteryx 中文意思是什麼
archaeopteryx
解釋
n. 名詞 【古生物學】始祖鳥。-
Paleontologists also debated whether archaeopteryx could fly.
古生物學家還討論了始祖鳥是否會飛的問題。 -
To support his hypothesis he pointed out that several fossilsofthe oldest known bird, archaeopteryx, lack feathers
為了證明這種觀點，他指出，已知的最早的鳥類始祖鳥的一些化石也沒有羽毛。 -
To support his hypothesis he pointed out that several fossils of the oldest known bird, archaeopteryx, lack feathers
為了證明這種觀點，他指出，已知的最早的鳥類始祖鳥的一些化石也沒有羽毛。 -
When archaeopteryx, a feathered skeleton that was seemingly half dinosaur and half bird, turned up in 1862 ? three years after the publication of “ the origin of species ” ? the origin of birds became a subject of raging debate among palaeontologists
1862年是《物種的起源》出版的前三年，當時一幅始祖鳥的有翼骨骼（看起來一半是恐龍，另一半是鳥）被發現，那時鳥的起源就成了古生物學家們激烈辯論的一個主題。 -
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。
分享友人