| 释义 |
an·as·pi·da
\-pədə\ noun plural
Usage: capitalized
Etymology: New Latin, from an- + -aspida (from Greek aspid-, aspis shield)
: a class or other division of primitive fishlike ostracoderms having a heterocercal tail and a covering of small elongated scales and known from Silurian-Devonian transition beds of Europe and America |