1. of or relating to the second period of the Stone Age (following the eolithic)
2. Of or pertaining to an era marked by early stone implements. The Paleolithic era (as proposed by Lubbock) includes the earlier half of the "Stone Age;" the remains belonging to it are for the most part of extinct animals, with relics of human beings.
3. second part of the Stone Age beginning about 750,00 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC