Xenozoic by Mark Schultz
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 luck just to survive. Told in combination with lush artwork, this pulp-fuelled narrative is an action packed fantasy, which is also a cautionary tale.