| 释义 |
fucoid, a. and n.|ˈfjuːkɔɪd|
[f. fuc-us + -oid. Cf. F. fucoïde.]
A. adj.
a. Resembling or belonging to seaweeds, esp. those of the group Fucaceæ.
b. Characterized by or containing impressions of such seaweeds or markings similar to them.
1839Roberts Dict. Geol., Fucoïd, a term applied to several fossil plants. There is a fucoïd shale, so called from the abundance of fuci it contains. 1854Murchison Siluria vi. 136 In the cliffs at Ludlow, the chief rocks are surmounted by what I termed the fucoid bed. This is a greenish-grey argillaceous sandstone, almost entirely made up of a multitude of small, wavy, rounded, stem-like forms, which resemble entangled sea-weeds. 1871Lyell Student's Elem. Geol. xxvii. 473 These sandstones have been called in Sweden ‘fucoid sandstones’.
B. n.
a. A seaweed of the group Fucaceæ.
b. A fossil marine plant resembling these.
1848Craig, Fucoid, a fossil plant belonging to the order Fucaceæ. 1857H. Miller Test. Rocks i. 17 The fucoids, or kelp-weeds. 1859Page Handbk. Geol. Terms s.v., Fucoids or fucus-like impressions occur in strata of every epoch. 1860Hartwig Sea & Wond. iii. 30 The feathery sertularia, the delicate fucoid. 1860All Year Round No. 50. 562 Little fucoids, progenitors of the kelp-weeds. 1872Nicholson Palæont. 477 The Lower Cambrian Rocks have yielded many so-called ‘fucoids’. |