Really?? Where were you during the last ice-age?Bad stuff seems to happen when the temperatures slide down from a peak.
Where the elephant was found would be similar to the herds of cows that died in a blizzard only it was in a fall that never ended, Baffin Island then south to NFLD and then west to the Rockies and north into Alaska as the last piece might tale 10,000 years all by itself and herds would die in that same way time after time after time.
Bad things happen when all your effort goes into getting ready for something and the opposite happens. Lacking accurate knowledge of the future is a lot different than being fed what is known to be bad information so you work towards your own extermination.
Green houses under a glacier is extinction, moving south with the rains is a 'vacation', no math to do on that one.