| 单词 |
prototheria |
| 释义 |
‖ prototheria, n. pl. Zool.|prəʊtəʊˈθɪərɪə|
[mod.L. (Gill, 1872), f. Gr. πρωτο- proto- + θηρία beasts.]
The lowest subclass of Mammals (correlative with Eutheria and Metatheria), comprising the single order Monotremata, with their hypothetical ancestors. Sometimes confined to the latter, as the primitive mammalian type. Hence protothere |ˈprəʊtəʊθɪə(r)|, a member of the Prototheria; prototherian |prəʊtəʊˈθɪərɪən|, a. belonging to the Prototheria; n. = protothere.
1880Huxley in Proc. Zool. Soc. 653 It will be convenient to have a distinct name, Prototheria, for the group which includes these, at present, hypothetical embodiments of that lowest stage of the mammalian type, of which the existing Monotremes are the only known representatives. 1881― in Nature XXIII. 229/1 There is no known Monotreme which is not vastly more different from the Prototherian type. 1885W. K. Parker Mammalian Desc. ii. 48 note, A thoroughly clear idea of what a primary mammal, an original, ancient ‘Protothere’ must have been like. 1903Q. Rev. Jan. 65 The astrapothere and prototheres died out without descendants. |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容：
相关热词搜索：prototheria英英词典英英释义英语词汇意思用法释义英语
单词 proto-Cubist 释义 proto-Cubistsee proto- 2 c.{var l=document.getElementsByTagName("li......