Pegasus! Pegasaur, rather. I wanted to design something more...structurally and anatomically sound than a horse with wings stuck on, and this is what I came up with. I try to not worry about that sort of thing in my worldbuilding for sagaverse, really I do, but the ghost of speculative biology haunts me still.
I have once again ruined a classic mythological creature, possibly forever, you're welcome!
(Yes, he can walk on his wings. He's like a suped up pelican from hell, if a pelican was maybe also a lizard. And a horse.)