"Wooly mammoth and giant bisons". Mammoth and other creatures were preserved in ice which formed when the waters of Noah's flood evaporated. Evaporation causes cooling.
Wooly Mammoth and Giant Bisons
August 27th
The Pleistocene is directly before what the geological timescale calls "present day." It includes the ice age, or sequence of ice ages, depending on how contrived you make the narrative.