When did anyone last see a woolly mammoth in the forests of Tennessee? Yet 12,000 to 13,000 years ago, several species of elephants lived there. More than 100 species of megafauna did not survive the end of the Ice Age.
Elephants belong to the proboscideans, animals with a long snout, and North America had four species of them until the last ice age ended. All of them are gone now. Randall asks the question at the center of the extinction debate: what happened to them?