Prehistoric [adjective]
Definition of Prehistoric:
before recorded history
Sentence/Example of Prehistoric:
Prehistoric man, as I just told you, was on a fair way to progress.
I can not give you any positive dates connected with Prehistoric Man.
He also gave me an admirable chameleon, a prehistoric, fabulous sort of animal.
In this way we can imagine the main points of the prehistoric evolution of marriage.
Well, it was as old as the ship—a prehistoric hose, and past repair.
The prehistoric man was cursing us, praying to us, welcoming us—who could tell?
In prehistoric times they were of enormous size and many of them were capable of flying.
They offer one of the darkest problems of prehistoric times.
All they've got is the prehistoric Whitworth system and that's all it is.
Clodd, Edward, on discovery of British prehistoric antiquities, 79.