Xenozoic

Forced into hiding by a global ecological cataclysm, humans emerge from their underground warrens half a millennium later to discover that the Earth has been totally transformed. All of the familiar flora and fauna are gone, replaced by a radically altered natural order populated by rampaging dinosaurs and strange new creatures. It takes guts, grim determination, ingenuity and a whole lot of old-fashioned luck just to survive, much less thrive, in this alien wilderness—all qualities that ace mechanic Jack Tenrec, lovely scientist Hannah Dundee and their friends possess in abundance.

But even the worthiest of these hardy souls are hard-pressed to surmount the obstacles presented by their new homeland. And when those trials are further compounded by the underhanded and selfish actions of the cutthroat human scavengers they encounter, even the best-equipped and bravest among them might not endure.