Proavis

Proavis refers to a hypothetical extinct species or hypothetical extinct taxon and was coined in the early 20th century in an attempt to support and explain the hypothetical evolutionary steps and anatomical adaptations leading from non-avian theropod dinosaurs to birds. The term has also been used by defenders of the thecodontian origin of birds. The concept should not be confused with the genus Protoavis.

单词	proavis
释义	proavis 英汉-汉英词典 n. 先鸟词组 \| 习惯用语您要查找的是不是： previous adj. 以前的；早先的；过早的 adv. 在…以前；在先 improvise vt. & vi. 临时制作, 临时凑成 provision n. 提供，供给，给养，供应品；（为将来做的）准备；饮食供应，（尤指旅途中的）粮食（provisions）；（法律文件的）规定，条款 v. 【正式】为…提供所需物品（尤指食物） provost n. 教务长；监狱看守；院长 proviso n. 附带条件；附文；限制性条款网络短语: proavis 先鸟英语百科 Proavis Proavis refers to a hypothetical extinct species or hypothetical extinct taxon and was coined in the early 20th century in an attempt to support and explain the hypothetical evolutionary steps and anatomical adaptations leading from non-avian theropod dinosaurs to birds. The term has also been used by defenders of the thecodontian origin of birds. The concept should not be confused with the genus Protoavis.
随便看	obsignating obsignation obsignations obsignatory obsigned obsigning obsigns obsinate headache intermingled with wind phlegm obsist obsistency obsite obsited obsitus Obskaya guba Obs Mon obsn OBSNFL obsol obsolenscense obsolesc. obsolesce obsolescence obsolescence allowance obsolescence and depreciation obsolescence charge

proavis

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网络短语:

Proavis