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Of, relating to, or being the epoch of geologic time from about 2.6 million to 12,000 years ago, the older of the two epochs of the Quaternary Period. It is characterized by the alternate appearance and recession of northern glaciation, the appearance and worldwide spread of hominins, and the extinction of numerous land mammals, such as the mammoths, mastodons, and saber-toothed tigers. See Table at geologic time.
The Pleistocene Epoch.
[Greek pleistos, most; see pelə-1 in the Appendix of Indo-European roots + -cene.]
(Geological Science) of, denoting, or formed in the first epoch of the Quaternary period, which lasted for about 1 600 000 years. It was characterized by extensive glaciations of the N hemisphere and the evolutionary development of man
(Geological Science) the Pleistocene the Pleistocene epoch or rock series
[C19: from Greek pleistos most + kainos recent]
1. of or pertaining to the geologic epoch forming the earlier half of the Quaternary Period, beginning about two million years ago and ending ten thousand years ago, the time of the last Ice Age and the advent of modern humans.n.
2. the Pleistocene Epoch or Series.
[1830–40; < Greek pleîsto(s) most (superlative of polýs much) + -cene]
The earlier of the two epochs of the Quaternary Period, from about 2 million to 10,000 years ago. The Pleistocene Epoch was characterized by the formation of widespread glaciers in the Northern Hemisphere and by the appearance of humans. See Chart at geologic time.
Pleistocene, Pliocene, Miocene, Oligocene - Pleistocene means "most recent," Pliocene means "more recent," Miocene means "moderately recent," and Oligocence means "but a little recent."
See also related terms for recent.