Currently my humanoids have powers in their genetics but they all appear similar for a given gender, age, and height. My humanoids are 4 times as tall as a human and live on an earth-like planet that is 4 times bigger than earth(the size of neptune), and has 4 times as thick of an atmosphere for all layers. This planet has 4 moons and orbits a double binary star(a type of quadruple star that is made up of 2 binary stars) The planet is called Kepler Bb(like B flat in music). But they can evolve into reptilian species, bird-men, bear-men, and other species of humanoid. Now I know that there can be multiple paths that lead to the same result but let's say that a humanoid evolves into a reptilian species. Each reptilian species has different degrees of adaptation with snake-like species having the highest ability to adapt and crocodilian-like species having the least ability to adapt. Dragon-like humanoids are 1 exception to this in that they can adapt to any environment even though they are most closely related to lizard-like humanoids which don't have as much ability to adapt. Ability to adapt from greatest to least: Dragon-like -> Snake-like -> Lizard-like -> Turtle-like -> Tortoise-like -> Crocodilian-like Let's say that the humanoid is dragon-like. Now how would it likely evolve that way? Like this? Common ancestor -> Cold-blooded -> Scales -> 2 extra limbs halfway between the 2 existing sets of limbs -> Wings -> Scales get thicker -> Ability to metabolize any living thing dead or alive Or some other way? And how would it develop? Like this? Big egg -> Hatch -> Walks on 4 legs -> The back legs grow longer than the front legs -> Wings start growing -> Dragon-specific abilities like fire breath develop -> Can't fly anymore if it is a huge species but can still fly if it is a smaller species or some other way? And how can I apply these ideas to the other species like bird-men and bear-men and how they would evolve and develop?