单词 pentatremite 释义 pentatremite Palont.|pnttrimat|Also contracted pentremite.[ad. mod.L. Pentatrmtes, f. penta- + Gr. ῆ hole, aperture: see -ite1 2.]An echinoderm of the genus Pentatrmtes, belonging to the extinct class Blastoidea, allied to the cri...