===Giả thuyết Australian Aborigines===
The traditional view above has recently been challenged by findings of human remains in South America, which are claimed to be too old to fit this scenario—perhaps even 20,000 years old. Some recent finds ( notably the [[Luzia Woman| Luzia skeleton]] in [[Lagoa Santa, Minas Gerais]], Brazil analyzed by [[ University of São Paulo]], Professor [[Walter Neves]]) are claimed to be morphologically distinct from the Asian [[phenotype]] and are more similar to [[Australian Aborigine]] s. These Americans would have been later displaced or absorbed by the Siberian settlers. The distinctive [[ Fuegians|natives of Tierra del Fuego ]], the southernmost tip of the South American continent, may have been the last remains of those Aboriginal populations.
These early settlers would have either crossed the ocean on [[raft]]s or boats, or traveled North along the Asian coast and entered the Americas through the Bering Strait area, well before the Siberian waves. This theory is still resisted by many scientists chiefly because of the apparent difficulty of the trip. Some proposed theories involve a southward migration from or through [[Australia (continent)|Australia]] and [[Tasmania]], hopping [[Subantarctic islands]] and then proceeding along the coast of [[Antarctica]] and/or southern [[ice sheet]]s to the tip of [[South America]] at the time of the [[last glacial maximum]].
There is no genetic nor linguistic evidence to support this hypothesis, even though it is plausible that aborigine people that inhabited East Asian shores could have crossed Beringia before the first Siberian waves.
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