A geological epoch from ~2.5 mya to 11.7 kya characterized by a period of repeated glaciations. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archeology. Subdivisions:
- Early (Lower) Pleistocene: ~2.58 mya - 781 kya.
- Middle Pleistocene: Emergence of Homo sapiens. 781 - 126 kya.
- Late (Upper) Pleistocene: 126 - 11.7 kya.