Abstract
Fossil woods obtained from the natural creek sediments deposited in the Earliest Jomon Period (ca. 9500 years ago) at Awazu-kotei Site were anatomically identified to 12 taxa of the deciduous broad-leaved trees. The wood fossil assemblages were characterized by a predominance of Quercus sect. Prinus trunk or shoot and a small amount of Quercus sect. Prinus and Maackia amurensis var. buergeri roots. The specific composition and occurrences of the wood fossil assemblages showed a temperate broad-leaved forest composed of mainly Quercus sect. Prinus, Magnolia, Salix, Picrasma quasioides, Maakia amurensis var. buergerii, and Castanea crenata. It was suggested that the reconstructed forest vegetation in and around the Awazu-kotei Site was fruitful in fagaceous nuts as a food for J omon people.
