Prehistoric Animals Still Living Today
Cryptids (of Cryptozoology)
Ropen of Papua New Guinea
In 1996, Blume saw a glow of something on a cliff above a mangrove swamp around Manus Island in Papua New Guinea.  He was assisting Carl Baugh,
of Texas, in searching for pterosaur-like creatures seen in that area. ("dragons")
American Pterosaurs
(book) [Jonathan Whitcomb] before and after writing "Searching for Ropens, Living Pterosaurs in Papua New Guinea," received many emails from eyewitnesses of similar creatures in the United States.
New Britain Creature
Late in 2006, Garth Guessman, a living-pterosaur investigator, interviewed three Americans who had worked in or visited a medical mission in Central New Britain Island, Papua New Guinea. The three  had separate sightings  of what may be Pterodactyloids (short-tailed pterosaurs).
Of Zoology (classified)
Coelacanth fish ("prehistoric" fish)
When a living coelacanth fish was found in 1938 it was hailed as the scientific sensation of the century. Until then, the coelacanth (pronounced SEE'-luh-canth) was known to science only from fossils. Scientists generally believed coelacanths had become extinct 60 or 70 million years ago. Since 1938 many more living coelacanths have been caught.
Alligator (a reptile)
An Alligator is a crocodilian in the genus Alligator of the family Alligatoridae. The name alligator is an anglicized form of the Spanish el lagarto (the lizard), the name by which early Spanish explorers and settlers in Florida called the alligator. There are two living alligator species: the American alligator (reptile: Alligator mississippiensis) and the Chinese alligator (Alligator sinensis).