M. Yamagata, D. Bui, C. Hoang, D. Kim, and -. Nguyen, Bunchar Pongpanich), which kindly provided us the opportunities to analyse pottery assemblages from Thailand We also thank Prof Tran Tan Vinh, the Sa Huynh and Cham Culture Museum in Duy Xuyen and the Tam Ky Museum for allowing us to study in Vietnam, as well as Prof. Carla Sinopoli for letting us study the Guthe collection kept in the Museum of Anthropology, Michigan University, the Chumphon National Museum and the Suthi Rattana Foundation We extend our thanks to the Department of Prehistory of the Mus eum National d'Histoire Naturelle (UMR 7194) and the PrehSEA project " Managing Prehistoric Heritage in Southeast Asia " for giving us the opportunity to present this research at the XVII World UISSP Congress, and to Prof. Valentine Roux and Dr

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