Pteranodon
Pteranodon (; from Greek πτερόν ( pteron, "wing") and ἀνόδων (anodon, "toothless") is a genus of pterosaur that included some of the largest known flying reptiles, with wingspans over 8 meters (26 feet). They lived during the late Cretaceous geological period of North America in present-day Kansas, Alabama, Nebraska, Wyoming, and South Dakota. More fossil specimens of "Pteranodon" have been found than any other pterosaur, with about 1,200 specimens known to science, many of them well preserved with nearly complete skulls and articulated skeletons. It was an important part of the animal community in the Western Interior Seaway.
Pteranodon
Some very fragmentary fossils belonging to pteranodontian pterosaurs, and possibly "Pteranodon" itself, have also been found on the Gulf Coast and East Coast of the United States. For example, some bone fragments from the Mooreville Formation of Alabama and the Merchantville Formation of Delaware may have come from "Pteranodon", though they are too incomplete to make a definite identification. Some remains from Japan have also been tentatively attributed to "Pteranodon", but their distance from its known Western Interior Seaway habitat makes this identification unlikely.
"Pteranodon longiceps" would have shared the sky with the giant-crested pterosaur "Nyctosaurus". Compared to "P. longiceps", which was a very common species, "Nyctosaurus" was rare, making up only 3% of pterosaur fossils from the formation. Also less common was the early toothed bird, "Ichthyornis".