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).
Glyptodon
Although Darwin is said to have found the first fossils of glyptodontines (the subfamily), the first mention of the genus "Glyptodon" in Europe was in 1823, from the first edition of Cuvier's "Ossemens Fossiles". The then unnamed "Glyptodon" was briefly mentioned in a letter from Dámaso Antonio Larrañaga. He had found "a femur... It was about seven pounds, and maybe six or eight inches wide", as well as part of a tail. At the time, the discovery was believed to have belonged to "Megatherium", a type of giant ground sloth. A man named Sellow found some carapace plates in three-foot deep clay in Uruguay four years later. That discovery only made the professors even more certain that the discoveries were of "Megatherium", since the bones of this prehistoric giant sloth were usually found in similar conditions and Cuvier had said that the genus was loricated.