有ゆう史し以い前ぜん

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

prehistory; prehistoric times

Refers to the period before written records. Often used in academic or formal contexts.

• 有ゆう史し以い前ぜん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.

• 有ゆう史し以い前ぜんの人じん類るいの生せい活かつについては、考こう古こ学がくから推すい測そくするしかない。

  We can only infer the lives of prehistoric humans from archaeology.