先せん土ど器き時じ代だいせんどきじだいじ字FuriganaMeanings1nounpreceramic periodhistorical termHistorical term for the period before pottery was used in Japan, corresponding roughly to the Paleolithic era.先せん土ど器き時じ代だいの遺い跡せきから石せっ器きが発はっ見けんさ
