Micraster
[maikrəstə]
解釋/意思:
(n.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows.
贝蒂整理
[maikrəstə]
(n.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows.
贝蒂整理