1.
Science
; 317(5836): 320; author reply 320, 2007 Jul 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-17641183
RESUMO
Waters and Stafford (Reports, 23 February 2007, p. 1122) provided useful information about the age of some Clovis sites but have not definitively established the temporal span of this cultural complex in the Americas. Only a continuing program of radiometric dating and careful stratigraphic correlations can address the lingering ambiguity about the emergence and spread of Clovis culture.