when did the quaternary period begin and end
Quaternary Quaternary ( /kwəˈtɜːrnəri/) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS).[5] It follows the Neogene Period and spans from 2.588 ± 0.005 million years ago to the present.[5] The Quaternary Period is divided into two epochs: the Pleistocene (2.588 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today).[5] The informal term "Late Quaternary" refers to the past 0.5–1.0 million years.[6]