As far as I'm aware, one of the main theories about the extinction of much of the megafauna of the Pleistocene is that human overhunting caused many species to go extinct. Of course, there were certainly other factors (i.e. the changing climate), but I was curious about how plausible it would be for megafauna from the Pleistocene to continue to live until the present even with human presence and civilization. For the sake of discussion, let's use the megafauna of the New World; assuming everything else goes well, how long would they be able to survive into the period of human civilization?
I'm not sure if this needs to be moved to ASB, as while it deals with extinct animals, it's not strictly an evolutionary POD (as I highly doubt these species would evolve heavily in the span of a few thousand years) and it definitely isn't a geological one.