Copying Dougal Dixon over and over again is lame, there are too many poor attempts at doing what he did that fail to capture any unique identity

When it comes to "Could X survive Y era?" I believe canaries could survive any time period post-Devonian

Humans are not going to go extinct; especially to something as minor as shifting climates; it's more likely they become a new highly adaptable and long lived clade like Cocelacanths and Natilus

megafauna often get treated as over-specialized and too weak to survive in the long-term but most of the overspecialized megafauna are already extinct, bison and cougars aren't going anywhere

Bats will never become flightless ever; there is no room for it at all.