crossopterygii 释义 总鳍鱼类 例句 1·Crossopterygii ; most known only in fossil form. 总鳍目的鱼;大多仅知为化石形式存在。 2·Bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of crossopterygii . 用气泡或腮呼吸生活于南半球的多骨鱼类;有时被归为总鳍鱼类。
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