Rafetus Temporal range: [1] | |
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Rafetus swinhoei in Hanoi, Vietnam | |
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Rafetus euphraticus | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Testudines |
Suborder: | Cryptodira |
Family: | Trionychidae |
Subfamily: | Trionychinae |
Genus: | Rafetus Gray, 1864 |
Type species | |
Testudo euphratica Daudin, 1801 | |
Species | |
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Rafetus is a genus of highly endangered softshell turtles in the family Trionychidae. It is a genus of large turtles which are found in freshwater habitats in Eurasia.
Phylogenetic evidence largely suggests that Rafetus is most closely related to the widespread North American genus Apalone . The two genera appear to have diverged during the Late Eocene, likely when the ancestors of Apalone dispersed into North America via Beringia. [2] [3]
According to most taxonomists, the genus Rafetus contains the following two extant species.
A possible third species, Rafetus leloiiHà, 2000 (synonym R. vietnamensisLe et al., 2010), known commonly as the Hoan Kiem turtle, has been proposed as a species. It is considered a junior synonym of Rafetus swinhoei by most authorities, [6] but some Vietnamese scientists insist the two forms are not identical. The last known individual at Hoan Kiem Lake was found dead on 19 January 2016. [7] [8]
An extinct species R. bohemicus Liebus, 1930 from the Burdigalian age of the Early Miocene (about 17.5 million years ago) lived in what is today the Czech Republic. [1]
Cladogram as drawn by Walter G. Joyce, Ariel Revan, Tyler R. Lyson, and Igor G. Danilov (2009) [9]