npterodactylusThe leading genus of the order Pterosauria. It was formerly conterminous with the group Pterodactyli, but now gives name to the family Pterodactylidæ, and is restricted to species having the usual four joints in the ulnar digit, a very short flexible tail, the metacarpus usually more than half as long as the forearm, and the strong pointed jaws furnished with teeth to their tips. (Compare Rhamphorhynchus.) There are several species, extending from the Jura to the Chalk. See cut under pterodactyl.
But if the thin post-frontal bone were absorbed, Pterodactylus would resemble birds.