Thread:Dinoman972/@comment-25175729-20180617200843/@comment-24941009-20180618084734

It doesn't matter that much in ratites, as they cannot fly anyways, making wings a vestigial trait. In this case, I consider the difference is important: Wyverns can walk on all four, or even stand on their hind legs; while amphitheres have to either slither around like snakes or spend their whole life on the air similarly to swifts.

And yeah, subfamilies would be great. But then many more subtaxons, infrataxons, supertaxons and company would have to be implemented as well, making the whole project much more messy and complicated.