英语词汇“protochordata”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	protochordata
释义	Protochordata Protochordata [¦prōd·ō·kȯr′dad·ə] (invertebrate zoology) The equivalent name for Hemichordata. Protochordata Protochordata a division of the phylum Chordata, including the Hemichordata, Urochorda and Cephalochorda. The group lacks a vertebral column, cranium and organs associated with the region of the head in other chordates, but has a dorsal nerve chord and gill slits.
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Protochordata