The term "prehistoric" literally means "before history." History is the time since people began to write things down, which was approximately 5,000 years ago in the Middle East. In other areas history began later. For example, in most of the Americas and Australia, history didn't begin until Europeans arrived in 1492 and the late 1700's respectively, because the locals didn't write yet.
before recorded history
Any time before the existence of coherent written records.
The duration of His Prehistoric Past is 600.0 seconds.
His Prehistoric Past was created on 1914-12-07.
The prehistoric past of the Philippines is researched in a similar manner to the prehistoric record of other countries. Archaeological digs uncovers artifacts and remains of prehistoric civilizations, revealing new details about their lives and practices.
The past tense of refer is referred.
Humans have used integers since prehistoric times and the situation prior to that time is not well understood.
The Extinct Animal website (refer to the link, below) lists a number of prehistoric fish and reptiles.
Forms of life from the past, e.g dinosaurs.
The past tense of refer is referred.
The past participle of "refer" is "referred."
Prehistoric is basically the time before recorded history.