Abstract
The Austronesian language is spread from Madagascar in the west, Island Southeast Asia (ISEA) in the east (e.g. the Philippines and Indonesian archipelagoes) and throughout the Pacific, as far east as Easter Island. While it seems clear that the remote ancestors of Austronesian speakers originated in Southern China, and migrated to Taiwan with the development of rice farming by c. 5500 BP and onto the northern Philippines by c. 4000 BP (the Austronesian Dispersal Hypothesis or ADH), we know very little about the origins and emergence of Austronesian speakers in the Indonesian Archipelago. Using a combination of cranial morphometric and ancient mtDNA analyses on a new dataset from Gua Hairmau, that spans the pre-Neolithic through to Metal Period (5712—5591cal BP to 1864—1719 cal BP), we rigorously test the validity of the ADH in ISEA. A morphometric analysis of 23 adult male crania, using 16 of Martin’s standard measurements, was carried out with results compared to an East and Southeast Asian dataset of 30 sample populations spanning the Late Pleistocene through to Metal Period, in addition to 39 modern samples from East and Southeast Asia, near Oceania and Australia. Further, 20 samples were analyzed for ancient mtDNA and assigned to identified haplogroups. We demonstrate that the archaeological human remains from Gua Harimau cave, Sumatra, Indonesia provide clear evidence for at least two (cranio-morphometrically defined) and perhaps even three (in the context of the ancient mtDNA results) distinct populations from two separate time periods. The results of these analyses provide substantive support for the ADH model in explaining the origins and population history of ISEA peoples.
Highlights
IntroductionThe Austronesian language is spread from Madagascar in the west, Island Southeast Asia (ISEA) in the east (e.g. the Philippines and Indonesian archipelagoes) and throughout the Pacific, as far east as Easter Island
The Austronesian language is spread from Madagascar in the west, Island Southeast Asia (ISEA) in the east and throughout the Pacific, as far east as Easter Island
It is quite interesting that Early Gua Harimau, a subset of the pre-Neolithic samples, is closely connected with the late Pleistocene and early Holocene populations, including Hoabinhian, early Bac Son, and Con
Summary
The Austronesian language is spread from Madagascar in the west, Island Southeast Asia (ISEA) in the east (e.g. the Philippines and Indonesian archipelagoes) and throughout the Pacific, as far east as Easter Island. The subsequent Austronesian language speaking dispersals, from the Neolithic through to later Metal periods, throughout Island Southeast Asia, including Malaysia and Indonesia, and into the Pacific, referred to as the “Out of Taiwan” model or Austronesian Dispersal Hypothesis (ADH), are well attested to archaeologically [8]. The principle reason is the hitherto poor preservation of human remains from key localities in the region. Niah Cave, is the largest Neolithic mortuary site in ISEA, from which more than a hundred human skeletal remains have been reported, including the earliest dated in the region: the ‘deep skull’ [11, 12]. The very poor preservation of these remains, the crania, has hampered morphological analysis
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