The Paleolithic (or "Palaeolithic") /ˌpæliːəˈlɪθᵻk/ age is a prehistoric period of human history distinguished by the development of the most primitive stone tools and covers roughly 95% of human technological prehistory.The Paleolithic (or "Palaeolithic") /ˌpæliːəˈlɪθᵻk/ age is a prehistoric period of human history distinguished by the development of the most primitive stone tools and covers roughly 95% of human technological prehistory.The Paleolithic (or "Palaeolithic") /ˌpæliːəˈlɪθᵻk/ age is a prehistoric period of human history distinguished by the development of the most primitive stone tools and covers roughly 95% of human technological prehistory.