英语词汇“petalichthyida”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	petalichthyida
释义	Petalichthyida Petalichthyida [‚ped·ə·lik′thē·ə·də] (paleontology) A small order of extinct dorsoventrally flattened fishes belonging to the class Placodermi; the external armor is in two shields of large plates.
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Petalichthyida