先せん史し時じ代だい

noun, noun which may take the genitive case particle 'no'

prehistoric era; prehistoric times; prehistory

Refers to the period before written records. Used in historical, archaeological, and general contexts.

• 先せん史し時じ代だいの遺い跡せきがこの地ち域いきで発はっ見けんされた。

  Prehistoric ruins were discovered in this area.