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Post  taixyz1992 Tue Feb 22, 2011 5:21 pm

With Madagascar already geographically isolated by the Paleocene and lemur diversification dating to the same time, an explanation was needed for how lemurs had made it to the island. In the 19th century, prior to the theory of continental drift, scientists including Philip Sclater, Étienne Geoffroy Saint-Hilaire, and Ernst Haeckel suggested that Madagascar and India were once part of a southern continent—named Lemuria by Sclater—that has since disappeared under the Indian Ocean.[28][29] By the early 20th century, oceanic dispersal emerged as the most popular explanation for how lemurs reached the island.[18][23][25] The idea first took shape under the anti-plate tectonics movement of the early 1900s, when renowned paleontologist William Diller Matthew proposed the idea in his influential article "Climate and Evolution" in 1915. In the article, Matthew could only account for the presence of lemurs in Madagascar by "rafting".[30] In the 1940s, American paleontologist George Gaylord Simpson coined the term "sweepstakes dispersal" for such unlikely events.[31]


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