抄録
Kodera et al. (2001) reported the discovery of human remains from the outcrop of the Tako Shell-bed in the Shimosa group, and it is indicated that this fossil human materials belong to the paleolith age. It became clear afterwards investigations, however, that the stratum in which the fossil human material were excavated are not the Tako Shell-bed but the filling sediment of horizontal hollow tomb dug in the precipice of the Tako Shell-bed. This paper examined in the age by the 14C method on fossil human material sample got in the investigation in August, 2001. The fossil human material for the measurement is left metatarsus (TH-89). The sample conducted the pretreatment with Kondo et al. (1992) and Matsu'ura and Kondo (2001). Then, the analysis in 14C's of extracted gelatinization collagen was asked in Beta Analytic Inc., USA. As the result, the chronological value of this fossil human material was 1490±40 yr BP (Beta-160569). It was almost correspondent to an advanced stage from the later stage in the ancient tomb age in the calibration calendar year generation of fossil human material converted from 14C chronological value.
