英语词汇“helicoplacoidea”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	helicoplacoidea
释义	Helicoplacoidea Helicoplacoidea [‚hel·ə·kō·plə′kȯid·ē·ə] (paleontology) A class of free-living, spindle- or pear-shaped, plated echinozoans known only from the Lower Cambrian of California.
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Helicoplacoidea