A world where the Era of the Wild west is still in its prime, but cowboys, raiders, and normal townsfolk don't keep normal livestock or ride horses, because dinosaurs never went extinct, so they tamed them instead, keeping herds of triceratops, riding predators like raptors or the mighty tyrannosaurus to keep towns safe, giant pterosaurs flew through the air, pecking on ang smaller creatures, it was a world of rough living, where only the strongest survived