The common ancestor of whales and of all other land animals was a flatheaded, salamander -shaped tetrapod that hauled itself out of the sea onto some muddy bank about 360 million years ago.
鲸和其他陆地动物的共同祖先是平头蝾螈形四足动物，大约与3.6亿年前，他们拖着（笨重）身躯，离开大海，爬上泥泞岸边。
The common ancestor of whales and of all other land animals was a flatheaded, salamander -shaped tetrapod that hauled itself out of the sea onto some muddy bank about 360 million years ago.
鲸和其他陆地动物的共同祖先是平头蝾螈形四足动物，大约与3.6亿年前，他们拖着（笨重）身躯，离开大海，爬上泥泞岸边。
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