any period of time during which glaciers covered a large part of the earth's surface;
"the most recent ice age was during the Pleistocene"
from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
- Ice age refers to the latest glacial epoch.
- Their size during the last glacial period presumably depended on the relative gain and loss of reproductive capacity in the population of elks during that time.