陆桥

连接两块大陆的陆地

陆桥说英语:Land bridge)是生物地理学的一种学说,用来解释不同大陆出现相同或类似物种的原因。科学家认为以往各大陆有狭长的地峡(陆桥)相连,使生物能在各大陆互相走动,后来这些地峡慢慢沉到海洋中,才造成今日各大陆的独立。此一学说后被大陆漂移学说推翻。


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