Pteranodon vs. Pterosaur: What's the Difference?

Pteranodon and Pterosaur Definitions
Pteranodon
Any of several large pterosaurs of the genus Pteranodon of the Cretaceous Period, having a long crested head, a scooplike beak, no teeth, and a wingspan of over 8 meters (26 feet).
Pterosaur
Any of various extinct flying reptiles of the group Pterosauria, including the pterodactyls, of the Mesozoic Era, characterized by wings consisting of a membrane of skin extending from the side of the body to the very long fourth digit of the forelimb.
Pteranodon
A member of Pteranodon, a genus of large pterosaurs, the males of which had a bony crest on the back of the head.
Pterosaur
Any of several flying reptiles, of the extinct order †Pterosauria, including the pterodactyls.
Pteranodon
A genus of American Cretaceous pterodactyls destitute of teeth. Several species are known, some of which had an expanse of wings of twenty feet or more.
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Pterosaur
A pterodactyl.
Pterosaur
Extinct flying reptile of the Jurassic and Cretaceous having a birdlike beak and membranous wings supported by the very long fourth digit of each forelimb