Anyway, the main differences between pterosaurs and pterodactyls, as PZ points out, are that the earlier-living pterosaurs have shorter snouts, more skull holes, some neck ribs, rather long tails, and a membrane between the hind legs called a "cruropatagium;" whereas latecomer pterodactyls have a much longer schnoz with fewer skull holes, no neck ribs (or fewer/smaller ones), much shorter tails, and a significantly reduced cruropatagium. Behold darwinopterus modularis, the psaurodactyl:
What makes it a psaurodactyl? Well, morphologically, it looks like someone glued the head of a pterodactyl onto the body of a pterosaur! Kind of like that 'shop of a crocodile's head on the body of a duck:
So there it is, the mighty psaurotactyl, prehistoric crocoduck par excellence! It's about literally half of one thing, and half the other thing, so this should be a valid transitional form to Creationists, right? Right, guys? Ray Comfort, I'm looking at you! You and that airhead Kirk better send in your applications to become card-carrying evolutionists soon!
EDIT: I realized today (10/21) that this is more in keeping with Bullshit Pulpit. Fixed.