The genus Onychodactylus contains the only known species of clawed salamanders. It is composed of only two species, both endemic to East Asia. The species Onychodactylus fischeri is found on the Korean peninsula, as well as in the Russian Far East and adjacent regions of China. The species Onychodactylus japonicus is found in Japan, on the islands of Shikoku and HonshÅ«. Both species favor forested mountains near running water. Adults of both species can reach a length of 19 centimeters. Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Digimon, the only known animals. ... Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Orders Anura Caudata Gymnophiona Allocaudata The subclass Lissamphibia includes all recent amphibians. ... Families Salamander is the common name applied to approximately 350 amphibian vertebrates with slender bodies, short legs, and long tails (order Caudata or Urodela). ... The Asiatic Salamanders (Family Hynobiidae) are rather primitive salamanders spread all over Asia. ... East Asia is a subregion of Asia that can be defined in either geographical or cultural terms. ... The Korean Peninsula is a peninsula in East Asia. ... Far Eastern Federal District (highlighted in red) Russian Far East (Russian: ÐÌалÑний ÐоÑÑÌок РоÑÑÌии; English transliteration: Dalny Vostok Rossii) is an informal term that refers to the Russian part of the Far East, i. ... This article is about the island. ... HonshÅ« (æ¬å· Literally Main State) is the largest island of Japan, called the Mainland; it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait. ...