Of or relating to the cultural period of the Stone Age beginning with the earliest chipped stone tools, about 2.4 million years ago, until the beginning of the Mesolithic Period, about 15,000 to 11,500 years ago in western Asia and southern Europe.
User Defined Definitions
"second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC"