Climate and Evolution

William Diller Matthew was a Canadian-American paleontologist who significantly contributed to the understanding of mammalian evolution. His 1915 work, "Climate and Evolution," proposed that most mammalian orders and families originated in the Northern Hemisphere and then spread southward. Matthew argued against the existence of former land bridges, suggesting instead that natural rafts facilitated the transport of species across oceanic depths. He also contended that the isolation of species in remote southern areas, like Australia, explained their unique primitive faunas. This work highlights the intricate relationship between climatic conditions and the diversification and distribution of life on Earth.123