''Amyda'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

softshell turtle The Trionychidae are a taxonomic family of a number of turtle genera, commonly known as softshell turtles. The family was erected by Leopold Fitzinger in 1826. Softshells include some of the world's largest freshwater turtles, though many can a ...

s in the family

Trionychidae The Trionychidae are a taxonomic family of a number of turtle genera, commonly known as softshell turtles. The family was erected by Leopold Fitzinger in 1826. Softshells include some of the world's largest freshwater turtles, though many can a ...

. It contains two extant species: * ''Amyda cartilaginea'' -

Asiatic softshell turtle The Asiatic softshell turtle or black-rayed softshell turtle (''Amyda cartilaginea'') is a species of softshell turtle in the Trionychidae family. Despite its name, it is not the only softshell turtle in Asia (most trionychines are Asian). T ...

* ''Amyda ornata'' -

Southeast Asian softshell turtle The Southeast Asian softshell turtle (''Amyda ornata'') is a species of softshell turtle in the family Trionychidae. Taxonomy It was formerly considered a subspecies of the Asiatic softshell turtle (''A. cartilaginea''), which is now thought ...

Both species were formerly considered subspecies of a single species, ''Amyda cartilaginea'', but phylogenetic evidence supports both being distinct from one another. An

undescribed species In taxonomy, an undescribed taxon is a taxon (for example, a species) that has been discovered, but not yet formally described and named. The various Nomenclature Codes specify the requirements for a new taxon to be validly described and named. U ...

is also known from

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ...

. The fossil taxon '' 'Amyda'' ' ''gregaria'' from the

Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...

Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ...

has been tentatively placed in the genus ''

Trionyx ''Trionyx'' is a genus of softshell turtles belonging to the family Trionychidae. In the past many species in the family were classified in this genus, but today '' T. triunguis'', the African or Nile softshell turtle, is the only extant softshe ...

''.

References

Turtle genera Taxa named by Étienne Geoffroy Saint-Hilaire Taxonomy articles created by Polbot {{Turtle-stub