Most dragons are shown with batlike wings. The articulation of such is not a vexing problem.
The questioning comes about because this then describes a beast with six limbs. No other creature on Earth is thus equipped, and many find the concept unsettling.
It isn't so strange if you accept that you could be talking about another planet, but then again, it could be part of the magical charm of dragons!
Yes, the bat like thingy was called webbing in the article I read. Same difference.
Ah, Bob I am still a believer that dragons lived and walked with man.