Going from the lack of lower legs, could be a Linnorm. On the other hand, I wonder if they knew that a thing called a Drakon existed in greek myth? Basicly, it was a gigantic serpent-thing with forlegs. Fits the greek theme, at least. Makes me wonder if there is a whole greek-themed area out there that has all the varying animal monsters of greek myth as wildlife.
On the other hand, Steven Magnet could have had some badflank ancestors.
Spoilerdoes not have the usual feathers that go along with that sort of creature. What is the blurred thing to the right? Cant tell if its a wing or a claw.