Oh shit, have I say Ruberocursor is the smallest dragon. No he is not, this relative of the Crypterus is the smallest...yet A scavenger from north america, just 70 cm long Maybe you know the extinct european subspecies, called Basilisk.
Oh, the dragons with Coelurosauravus as the ancestors are just hypothetical. I first think about to reintroduced them too. But a creature like that is so implausible, that I put the plans to the files.