last ice age megafauna of the Pleistocene ice age Pleistocene megafauna of the Pleistocene Pleistocene last ice age ice age Pleistocene 12,000 years ago Pleistocene ice age ice age ice age Pleistocene ice age ice age ice ages 12,000 years ago ice ages Pleistocene Epoch 12,000 years ago mid-Pleistocene Epoch Pleistocene ice age ice age Pleistocene Epoch 12,000 years ago ice age Pleistocene ice age Pleistocene Epoch Pleistocene mid-Pleistocene Epoch Pleistocene ice ages mid-Pleistocene Epoch ice age Pleistocene Epoch the Late Pleistocene a layer of ice Pleistocene [epoch] ice age Pleistocene last ice age 12,000 years ago