| 单词 | anaspid |
| 释义 | anaspid /euh nas"pid/, n. Paleontol. any member of an extinct order, Anaspida, of small, freshwater jawless fishes of the Silurian and Devonian periods, characterized by a single nostril, narrow rows of scales, and, usually, an armor-plated head. [ < NL Anaspida name of the order, equiv. to an- AN-3 + Gk aspid- (s. of aspís shield) + -a neut. pl. n. ending] |
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