| 释义 |
protero-|prɒtərəʊ|
before a vowel proter- |prɒtər|, combining form from Gr. πρότερος fore, former, anterior, in place, time, order, rank; used in a few scientific terms.
ˈproterobase |-beɪs| Min. [after diabase], an eruptive rock resembling diabase, but in a more advanced stage of alteration. ˌproteroˈglossate a. Zool. [Gr. γλῶσσα tongue], belonging to Günther's division Proteroglossa of batrachians, having the tongue free in front. ˈproterosaur |-sɔː(r)| [Gr. σαῦρος lizard], a saurian of the extinct genus Proterosaurus or group Proterosauria, comprising some of the oldest known reptiles; so ˌproteroˈsaurian a., belonging to the Proterosauria; n. a proterosaur. ˈproterotome |-təʊm| a. Zool. [Gr. -τοµος cutting], applied to mastication in which the molars of the lower jaw move forwards against those of the upper, as in the Carnivora. ˌproteroˈzoic a. Geol. [cf. protozoic]: see quots. See also proterandrous, proterogynous, etc.[1872Nicholson Palæont. 356 In the Permian Rocks the first undoubted Reptilian remains occur, the *Proterosaurus of this period being probably a Lacertilian.] 1896Cope Primary Factors Evol. vi. 318 The inferior molar shears forwards on the superior molar. *Proterotome mastication.
1905Chamberlin & Salisbury Geol. I. i. 17 In these four great series of sedimentary rocks there are, here and there, intrusions of igneous rocks, and in some places the sedimentary beds have been metamorphosed into crystalline rocks by heat and pressure. This is particularly true in the lowest of these series, the *Proterozoic, where a large part of the sediment is metamorphosed, and where there is much igneous rock.
Ibid. II. iv. 162 To the *Proterozoic era is assigned the time that elapsed between the close of the formation of the igneous complex and the beginning of the lowest system which is now known to contain abundant well-preserved fossils. [Note] Proterozoic, as here used, is a synonym of Algonkian as used by the U.S. Geol. Surv. 1906Athenæum 18 Aug. 191/2 Between the close of this long archæan period and the beginning of the palæozoic ages..there was another vast stretch of geological time, distinguished as the Proterozoic era.
1971Nature 25 June 498/1 The establishment of global subdivisions for the Upper (Late) Pre-Cambrian, or the Proterozoic, is particularly important. 1977A. Hallam Planet Earth 189 The Proterozoic was, compared with the Archaean, dominantly a period of crustal reworking. |