陆桥

连接两块大陆的陆地

陆桥说英語:Land bridge)是生物地理學的一種學說,用來解釋不同大陸出現相同或類似物種的原因。科學家認為以往各大陸有狹長的地峽(陸橋)相連,使生物能在各大陸互相走動,後來這些地峽慢慢沉到海洋中,才造成今日各大陸的獨立。此一學說後被大陸漂移學說推翻。


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