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.
Tropeognathus
"Tropeognathus mesembrinus" was the subject of an entire episode of the award-winning BBC television program "Walking with Dinosaurs" (which used the first name of its cousin "Ornithocheirus" but was incorrectly named as a species of it, as "Ornithocheirus mesembrinus"). In "Walking with Dinosaurs: A Natural History", a companion book to the series, it was claimed that several large bone fragments from the Santana Formation of Brazil indicated that "O. mesembrinus" may have had a wingspan reaching almost and a weight of , making it one of the largest known pterosaurs. However, the largest definite "Ornithocheirus mesembrinus" specimens described at the time measured in wingspan. The specimens which the producers of the program used to justify such a large size estimate were described in 2012, and were under study by Dave Martill and David Unwin at the time of "Walking With Dinosaurs"' production. The final description of the remains found a maximum estimated wingspan of for this large specimen. Unwin stated that he did not believe the higher estimate used by the BBC was likely, and that the producers likely chose the highest possible estimate because it was more "spectacular." Nevertheless, specimen MN 6594-V in 2013 was, at its degree of completeness, the largest known pterosaur individual.