Pteranodon
"Pteranodon" was the first pterosaur found outside of Europe. Its fossils first were found by Othniel Charles Marsh in 1870, in the Late Cretaceous Smoky Hill Chalk deposits of western Kansas. These chalk beds were deposited at the bottom of what was once the Western Interior Seaway, a large shallow sea over what now is the midsection of the North American continent. These first specimens, YPM 1160 and YPM 1161, consisted of partial wing bones, as well as a tooth from the prehistoric fish "Xiphactinus", which Marsh mistakenly believed to belong to this new pterosaur (all known pterosaurs up to that point had teeth). In 1871, Marsh named the find ""Pterodactylus oweni"", assigning it to the well-known (but much smaller) European genus "Pterodactylus". Marsh also collected more wing bones of the large pterosaur in 1871. Realizing that the name he had chosen had already been used for Harry Seeley's European pterosaur species "Pterodactylus oweni" in 1864, Marsh re-named his giant North American pterosaur Pterodactylus occidentalis, meaning "Western wing finger," in his 1872 description of the new specimen. He also named two additional species, based on size differences: Pterodactylus ingens (the largest specimen so far), and Pterodactylus velox (the smallest).
Temnodontosaurus
The species "Temnodontosaurus platyodon" was named by William Conybeare in 1822 from the specimen BMNH 2003 from the Lyme Regis. This specimen is located at the British Museum of Natural History. "T. platyodon" is from the Upper Hettangian-Lower Sinemurian. It is the type species for "Temnodontosaurus"." T. platyodon" specimens have been found in England, Germany and Belgium. This includes the Lyme Regis in Dorset England, Herlikofen in Germany and Arlon in Belgium. Only one complete skeleton of "T. platyodon" is known of (BMNH 2003) and there is also a well preserved skull (BMNH R1158).
In 1995, Christopher McGowan explained that the previously named "T. risor" specimens are really juvenile versions of "T. platyodon". The specimen he used to back up his argument was one collected by David Sole in 1987 from Black Ven (East of Lyme Regis). The previously known "T. risor" specimens (three skulls) were seen previously as different to the "T. platyodon" species because they had larger orbits, smaller maxillae and curved snouts. However, McGowan described them as juveniles because of the small size of the forefin relative to the skull. The "T. risor" skulls are thought to be juveniles because the skull is relatively long compared to the postcranial skeleton.