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).
Rhamphinion
The type species, "Rhamphinion jenkinsi", was described and named in 1984 by Kevin Padian, based on holotype MNA V 4500, a partial skull including the occipital region, a partial left jugal, a fragment of the lower jaw including two preserved teeth and the impression of a third, and one other fragment that could not be identified. The specific name honors the discoverer of the fossil, Farish Alston Jenkins Jr. At the time, it was the oldest known pterosaur specimen from the Western Hemisphere (now overtaken by "Caelestiventus"). Padian did not assign it to any family or suborder within Pterosauria, but did note that the jugal was unlike that of pterodactyloids, and so may have belonged to a "rhamphorhynchoid", i.e. a basal pterosaur. A bone from the wing of another pterosaur from the same formation, found in 1981, may have also belonged to a "rhamphorhynchoid", with a wingspan of about 1.5 m (4.9 ft). Peter Wellnhofer agreed that a "rhamphorhynchoid" identity was very likely, but David Unwin was more hesitant to classify its fragmentary remains in "The Pterosaurs: From Deep Time," noting it only as a "possibly valid species of uncertain relationships." A recent cladistic analysis of "Jidapterus" recovers "Rhamphinion" as a close relative of "Dimorphodon" and "Parapsicephalus".