I've done extensive research on this subject. From what I have picked up so far I would have to disagree with you. Although, they seem like
reptiles at first glance. I mean, as far as looks go and all. But you have to look more closely at their living habits. They need water to survive
and function. They always lay their eggs in a semi-aquatic environment. Males can morph into females if need be.
I, in my humble opinion, would have to say they are more like amphibians.
*I hope I don't get banned for figuring that out.*