Paleontological surveys in Miocene sites of Thailand have
yielded several fossil primates. Two species of the hominoid
genus Khoratpithecus, considered as a sister-group of the ex-
tant orang-utan, have been described: Khoratpithecus chi-
angmuanensis from the Middle Miocene (13.5–10 million-
years, hereafter Ma) and Khoratpithecus piriya (Chaimanee
et al., 2006), from the Late Miocene (9–7 Ma). These primate
bearing sites are critical because they provide new insights
on the Asian hominoid radiation and paleobiogeographical
history, as well as the environmental conditions they lived
in. Preliminary analyses of associated pollen assemblages
suggested a mosaic of tropical freshwater swamps and a for-
est flora dominated by the genus Syzygium, reminiscent of
the extant African habitat that characterizes the White Nile
headwaters (Chaimanee et al., 2003).
Paleontological surveys in Miocene sites of Thailand haveyielded several fossil primates. Two species of the hominoidgenus Khoratpithecus, considered as a sister-group of the ex-tant orang-utan, have been described: Khoratpithecus chi-angmuanensis from the Middle Miocene (13.5–10 million-years, hereafter Ma) and Khoratpithecus piriya (Chaimaneeet al., 2006), from the Late Miocene (9–7 Ma). These primatebearing sites are critical because they provide new insightson the Asian hominoid radiation and paleobiogeographicalhistory, as well as the environmental conditions they livedin. Preliminary analyses of associated pollen assemblagessuggested a mosaic of tropical freshwater swamps and a for-est flora dominated by the genus Syzygium, reminiscent ofthe extant African habitat that characterizes the White Nileheadwaters (Chaimanee et al., 2003).
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