Fiction:Evolution of Zexaks

Zexak evolution began with the emergence of a group of small paravians which developed venom glands like those of frogs to defend themselves from larger dinosaurs. The presence of this trait is what defines Zexakosauria, the larger clade which Zexakidae falls under.



The earliest zexakosaurs were arboreal, had feathered bodies and wings on all four limbs, and could glide. They were generally around the size of a pigeon, and they ate insects and small mammals.