Dental evidence for the peopling of Guam

Pamela Lin Lawrence, University of Nevada, Las Vegas


The morphology of fifty-six dental casts from pre- to early European contact Chamorro skeletal remains from Guam, Micronesia is described based on eighteen tooth crown traits. Chi-square tests for sex dimorphism do not indicate significant differences between males and females. Observer error was found for two traits on the upper first molar and one on the upper canine; The Chamorro dentition exhibits a simplified crown morphology typical of the Sundadont dental pattern. Comparisons of trait frequencies from this study with other Asian and non-Asian samples selected from the literature support Turner's (1990b) suggestion that the Chamorro likely originated in southern Island Southeast Asia.