TY - JOUR
T1 - Dental phenotypic shape variation supports a multiple dispersal model for anatomically modern humans in Southeast Asia
AU - Corny, Julien
AU - Galland, Manon
AU - Arzarello, Marta
AU - Bacon, Anne Marie
AU - Demeter, Fabrice
AU - Grimaud-Hervé, Dominique
AU - Higham, Charles
AU - Matsumura, Hirofumi
AU - Nguyen, Lan Cuong
AU - Nguyen, Thi Kim Thuy
AU - Nguyen, Viet
AU - Oxenham, Marc
AU - Sayavongkhamdy, Thongsa
AU - Sémah, François
AU - Shackelford, Laura L.
AU - Détroit, Florent
PY - 2017/11
Y1 - 2017/11
N2 - The population history of anatomically modern humans (AMH) in Southeast Asia (SEA) is a highly debated topic. The impact of sea level variations related to the Last Glacial Maximum (LGM) and the Neolithic diffusion on past population dispersals are two key issues. We have investigated competing AMH dispersal hypotheses in SEA through the analysis of dental phenotype shape variation on the basis of very large archaeological samples employing two complementary approaches. We first explored the structure of between- and within-group shape variation of permanent human molar crowns. Second, we undertook a direct test of competing hypotheses through a modeling approach. Our results identify a significant LGM-mediated AMH expansion and a strong biological impact of the spread of Neolithic farmers into SEA during the Holocene. The present work thus favors a “multiple AMH dispersal” hypothesis for the population history of SEA, reconciling phenotypic and recent genomic data.
AB - The population history of anatomically modern humans (AMH) in Southeast Asia (SEA) is a highly debated topic. The impact of sea level variations related to the Last Glacial Maximum (LGM) and the Neolithic diffusion on past population dispersals are two key issues. We have investigated competing AMH dispersal hypotheses in SEA through the analysis of dental phenotype shape variation on the basis of very large archaeological samples employing two complementary approaches. We first explored the structure of between- and within-group shape variation of permanent human molar crowns. Second, we undertook a direct test of competing hypotheses through a modeling approach. Our results identify a significant LGM-mediated AMH expansion and a strong biological impact of the spread of Neolithic farmers into SEA during the Holocene. The present work thus favors a “multiple AMH dispersal” hypothesis for the population history of SEA, reconciling phenotypic and recent genomic data.
KW - Contour analysis
KW - Geometric morphometrics
KW - Homo sapiens
KW - Last Glacial Maximum
KW - Neolithic expansion
KW - Population history
UR - http://www.scopus.com/inward/record.url?scp=85032992386&partnerID=8YFLogxK
U2 - 10.1016/j.jhevol.2017.08.017
DO - 10.1016/j.jhevol.2017.08.017
M3 - Article
C2 - 29037415
AN - SCOPUS:85032992386
SN - 0047-2484
VL - 112
SP - 41
EP - 56
JO - Journal of Human Evolution
JF - Journal of Human Evolution
ER -