Giant Eagle ) in New Zealand the Gorilla-sized Lemurs and two species of Hippopotamus on Madagascar the Giant Birds , Land Turtles and Crocodiles on New Caledonia the Giant Geese and Moa-nalos (Giant Ducks ) in Hawaii (`Pleistocene Megafauna , 2005 . The major extinction episodes also happened in different times for different land masses : For Africa , Asia and Australia it started 50 thousand years before the present For North Eurasia , 13 thousand years For North America , 11 thousand years For South America , 10 thousand...











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