Best known for such events as the Nebraskan and Wisconsin glaciations, this is, for 10 points, what epoch which was dominated by the most recent ice age and which preceded the current Holocene epoch?
Though the Gauss-Matuyama magnetostratagraphic event and the similarly timed Monte San Nicola stratum have been suggested as a lower bound for it, the Vrica stratum, which is associated with the top of the Olduvai event, is official. The Matuyama-Brunhes magnetic polarity shift took place during this epoch, thus producing the Earth's current polarity, while the end of this epoch is marked by the mass extinction of New World mammalian species and the end of the Younger Dryas. Best known for such events as the Nebraskan and Wisconsin glaciations, this is, for 10 points, what epoch which was dominated by the most recent ice age and which preceded the current Holocene epoch? 
Though the Gauss-Matuyama magnetostratagraphic event and the similarly timed Monte San Nicola stratum have been suggested as a lower bound for it, the Vrica stratum, which is associated with the top of the Olduvai event, is official.
Pleistocene Epoch 