旧きゅう石せっ器き時じ代だい

noun

Paleolithic; Old Stone Age

Refers to the prehistoric period characterized by the use of stone tools.

• 旧きゅう石せっ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れた。

  Stone tools were discovered at a Paleolithic site.