A separate American diffusionist school of thought, led by Clark Wissler and Alfred Kroeber (both students of Boas), also arose in the first few decades of the twentieth century.
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The newly described languages were often so strikingly different from the well studied languages of Europe and Southeast Asia that some scholars even accused Boas and Sapir of fabricating their data.
Yet all snakes share a lizard ancestry, and some species like pythons and boas still have stubs where their back legs would have been, the last reminders of their four-legged ancestors.
Our part-Indian guide had cleared the path to the lake the day before; when we walked the path we saw where he had impaled the lopped head of a boa, open-mouthed, on a pointed stick by the canoes, for decoration.
In a speech to fellow officers at the weekend, General Eduardo Villas Boas warned Brazil was living through a political, economic and ethic crisis which could have negative effects on stability.