Results for « 缺甲鱼 » (cmn)
01475940-n
志留纪或泥盆纪时代,现已灭绝的淡水小型无?脊椎动物,常有歪形尾和甲壳头, 缺 甲鱼, 志留纪 或 泥盆纪 时代 , 现 已 灭绝 的 淡水 小型 无 ? 脊椎 动物 , 常 有 歪形尾 和 甲壳头, 缺甲鱼
anaspid
     extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian

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