found: Wikipedia, Jan. 7, 2014(under Orangutan: The orangutans are the two exclusively Asian species of extant great apes. Native to Indonesia and Malaysia, orangutans are currently found in only the rainforests of Borneo and Sumatra. Classified in the genus Pongo, orangutans were considered to be one species. However, since 1996, they have been divided into two species: the Bornean orangutan (P. pygmaeus) and the Sumatran orangutan (P. abelii).)
found: Mammal species of the world, via Smithsonian Institution National Museum of Natural History website, Jan. 7, 2014(Pongo pygmaeus. Common name: Bornean Orangutan)
found: Animal diversity web, Jan. 7, 2014(Genus Pongo - orangutan. Species: Pongo abelii (Sumatran orangutan); Pongo pygmaeus (Bornean orangutan))
found: ITIS, Jan. 7, 2014(Pongo pygmaeus - orangutan)
found: The IUCN red list of threatened species, 2013.2, via WWW, Jan. 7, 2014(Pongo pygmaeus (Bornean Orangutan))
found: OCLC, Jan. 8, 2014(in titles: Bornean orang-utan; Bornean orang-utan (Pongo pygmaeus); Bornean and Sumatran orang-utans; Bornean orang-utans (Pongo pygmaeus); Bornean orang-utans, Pongo pygmaeus pygmaeus)
