''Amyda'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

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. 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 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 e ...

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

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

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''.

References

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