Ainu and Ryukyuan Cranial Nonmetric Variation : Evidence which Disputes the Ainu-Ryukyu Common Origin Theory
Presence or absence of 22 nonmetric traits was recorded in the crania from the islands of Amami, Okinawa, and Sakishima of the Ryukyu Islands. Their trait-frequency patterns were compared with the samples from East/Southeast Asia and the world using Smith's Mean Measure of Divergence (MMD) statistic, principal coordinate analysis, and neighbor-joining clustering algorithm. The results indicated that the Ryukyuan samples aligned with the East/Southeast Asian "Mongoloid" cluster and are far distant from the Jomon/Ainu cluster. These results do not support the prevailing view which favors a common origin of the Ainu and Ryukyuan peoples. Moreover, evidence based on morphological and genetic data supporting the present conclusion, and populational uniqueness of the Jomon and Ainu were discussed.
- Anthropological science : journal of the Anthropological Society of Nippon
Anthropological science : journal of the Anthropological Society of Nippon 106(2), 99-120, 1998-04
The Anthropological Society of Nippon