The Paleolithic Period coincides almost exactly with the Pleistocene epoch of geologic time, which lasted from 2.6 million years ago to about 12,000 years ago. 
Pa·le·o·lith·ic (pā′lē-ə-lĭth′ĭk) adj. Of or relating to the cultural period of the Stone Age beginning with the earliest chipped stone tools, about 2.4 ...
All of them—Scarsdale, Zone, South Beach, Paleolithic, Israeli Army—OK, maybe not eating placentas.
The Stone Age (known to scholars as the Paleolithic era) in human prehistory is the name given to the period between about 2.5 million and 20,000 years ago.
The Neolithic i / ˌ n iː ə ˈ l ɪ θ ɪ k /  Age, Era, or Period, from νέος (néos, "new") and λίθος (líthos, "stone"), or New Stone Age, was a ...
Paleolithic Period, also spelled Palaeolithic Period, also called Old Stone Age, ancient cultural stage, or level, of human development, characterized by the use of ...
Introduction Paleolithic period or Old Stone Age, the earliest period of human development and the longest phase of mankind's history. It is
An Overview of the Paleolithic. Prehistoric cultural stage, or level of human development, characterized by the creation and use of stone tools.
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The Paleolithic Age, also known as the Stone Age, encompasses the first widespread use of technology—as humans progressed from simpler to more complex developmental ...