| 释义 |
trilobite Palæont.|ˈtraɪləʊbaɪt, ˈtrɪ-|
[ad. mod.L. Trilobītes (Walch, 1771), f. Gr. τρι- tri- + λόβ-ος lobe (of the ear, etc.) + -ite1.]
A member of a large group of extinct arthropodous animals, characterized by a three-lobed body; allied to the extinct Eurypterids and the existing King-crabs (Limulus), and like them of doubtful affinity, having been usually classed as crustaceans, sometimes as arachnids; their remains are found abundantly in Palæozoic rocks, esp. the Silurian.
1832J. Green Monogr. Trilobites N. Amer. 14 The fossil remains of the trilobite family. 1833Lyell Princ. Geol. III. 195 A limestone, containing trilobites and other fossils of our mountain and transition limestones. 1842H. Miller O.R. Sandst. ix. (ed. 2) 209 The Trilobite has a wide geological range, extending from the upper Cambrian rocks to the upper Coal Measures. 1860All Year Round No. 50. 563 A creature called a Trilobite, very much like an immense woodlouse. 1873Dawson Earth & Man iii. 44 The body was composed of numerous segments, each divided transversely into three lobes, whence they have received the name of Trilobites.
attrib.1854Murchison Siluria ix. 194 The trilobite-flags of Builth.
Hence trilobitic |-ˈɪtɪk| a., pertaining to, of the nature of, or containing trilobites.
1839Civil Eng. & Arch. Jrnl. II. 148/2 Until we come to trilobitic schist. 1872W. S. Symonds Rec. Rocks iii. 51 The absence of the trilobitic genus, Olenus, from the Menevian group. 1875J. Croll Climate & T. xviii. 294 Those strange trilobitic-looking fishes of that era. |