| 释义 |
eo-, prefix
employed as combining form of Gr. ἠώς dawn, in scientific terms of recent origin, chiefly Geol. and Palæont. First used in Eocene, with the sense ‘characterized by the ‘dawn’ or faintly recognizable beginnings of’ (the recent fauna and flora); subsequently, with similar notion, in eophytic |iːəʊˈfɪtɪk|, a. [+ Gr. ϕυτόν plant + -ic], characterized by the earliest appearance of plant-life. eozoic |iːəʊˈzəʊɪk|, a. [+ Gr. ζῷον animal], characterized by the earliest appearance of animal life; said of the Laurentian strata and the period represented by them. Also in mod.L. names of fossil genera, believed to be the earliest representatives of types still existing, as Eohippus |iːəʊˈhɪpəs| [+ Gr. ἵππος horse], the oldest known genus of the horse family. Eopteris |iːˈɒptərɪs| [+ Gr. πτερίς fern], a genus including the oldest known fern. Eosaurus |iːəʊˈsɔːrəs|, the oldest known genus of saurians. Eozoon |iːəʊˈzəʊən| [+ Gr. ζῷον animal], a supposed genus of foraminifers or rhizopods, at one time regarded as the earliest known animal; its alleged remains are now believed to be of inorganic origin; hence Eoˈzoonal a., pertaining to the eozoon.
1879Le Conte Elem. Geol. 504 *Eohippus..a small animal no bigger than a fox, having three toes on the hind foot and four perfect ones on the fore foot. 1880Huxley in Times 25 Dec. 4/1, I do not see..any reason to doubt that the eocene equidæ were preceded by mesozoic forms, which differed from eohippus in the same way as eohippus differs from equus.
1880Dawson Earth & Man ii. 32 An *Eophytic period preceding the Eozoic.
1879Le Conte Elem. Geol. 404 Unless we except the *Eosaurus, these are the first true reptiles found.
1873Dawson Earth & Man ii. 18 *Eozoic or those [rocks] that afford the traces of the earliest known living beings. 1871Hunt in Proc. Amer. Assoc. Sci. 53 Subsequently to the eozoic times, silicated rocks..are comparatively rare.
1872Darwin Orig. Spec. x. 287 The existence of the *Eozoon in the Laurentian formation of Canada is generally admitted.
1879Le Conte Elem. Geol. 275 A section of an *Eozoönal mass. 1881R. Etheridge in Jrnl. Geol. Soc. XXXVIII. 54 The prevalent limestones, Eozoonal or otherwise. |