Whatever the systematic position of the Ban Tak giant trees, theyare typical for a much wetterclimate than that which prevails today in northern Thailand. The Ban Tak fossil trees demonstrate thathumidevergreenforestwasstillpresentattheendof theEarly Pleistocene, at about 800 ka (Middle Pleistocene Transition) just before the onset of the very long phase of intensified climatic oscillations which lasted until ca 10 ka (Louys and Turner, 2012). This conclusion is of great importance for the interpretation of the rich Pleistocene mammalian faunas of Thailand, the evolution of which wasstronglyconditionedbythevegetation(TougardandMontuire, 2006). The contemporaneous archaic pebble tool assemblages found north of Tak, which have been interpreted as reflecting the continuance of the humid tropical forest since the Pliocene (Hutterer, 1977), disprove that the subtropical primeval rainforest formed an impenetrable ecological barrier between the northern Chinese population of Homo erectus, and a southern one in Indonesia, as hypothesized by Ciochon and Bettis (2009).
Whatever the systematic position of the Ban Tak giant trees, theyare typical for a much wetterclimate than that which prevails today in northern Thailand. The Ban Tak fossil trees demonstrate thathumidevergreenforestwasstillpresentattheendof theEarly Pleistocene, at about 800 ka (Middle Pleistocene Transition) just before the onset of the very long phase of intensified climatic oscillations which lasted until ca 10 ka (Louys and Turner, 2012). This conclusion is of great importance for the interpretation of the rich Pleistocene mammalian faunas of Thailand, the evolution of which wasstronglyconditionedbythevegetation(TougardandMontuire, 2006). The contemporaneous archaic pebble tool assemblages found north of Tak, which have been interpreted as reflecting the continuance of the humid tropical forest since the Pliocene (Hutterer, 1977), disprove that the subtropical primeval rainforest formed an impenetrable ecological barrier between the northern Chinese population of Homo erectus, and a southern one in Indonesia, as hypothesized by Ciochon and Bettis (2009).
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