鳍脚亚目原为鳍脚目,现已归入食肉目。是水栖性的食肉动物,牙齿和陆栖的食肉动物相似,但是成鳍状,身体纺锤型,非常适于游泳。鳍脚类平时生活在水中,在水中觅食,但是需要在陆地上繁殖,也在陆地上休息。鳍脚类通常在繁殖期成大群云集在岸边,为一雄多雌制,雄兽长体型比雌兽大数倍。
n. Pinnipedia
生物学家们长期认为,两类鳍脚亚目动物,即海狮和海象,都是从一种陆地上的类似于熊的动物繁衍而来的。
Biologists have long maintained that two groups of pinnipeds, sea lions and walruses, are descended from response to similar environmental pressures.
有鳍状肢的属于鳍脚亚目动物的,肉食水生动物的一个分支,包括。
Of or belonging to the Pinnipedia, a suborder of carnivorous aquatic mammals that includes the seals, walruses, and similar animals having finlike flippers as organs of locomotion.
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