|The spiny softshell turtle a species of the Trionychia superfamily|
Trionychia is a superfamily of turtles which encompasses the species that are commonly referred to as softshelled turtles as well as some others. They are found throughout the temperate regions of the world. The Jurassic genus Sinaspideretes is considered the earliest representative of the superfamily.
Except for those not assigned to a family, only living genera are listed here.
- Family Carettochelyidae
- Family Trionychidae
- Rhodin 2011, p. 000.204
- Ouyang, Hui; Li, Lu; Tong, Haiyan (July 2014). "A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China". Geological Magazine. 151 (4): 600–610. doi:10.1017/S0016756813000575. ISSN 0016-7568.
- One or more basal lineages formerly believed to be a distinct family
- Rhodin, Anders G.J.; van Dijk, Peter Paul; Inverson, John B.; Shaffer, H. Bradley; Roger, Bour (2011-12-31). "Turtles of the world, 2011 update: Annotated checklist of taxonomy, synonymy, distribution and conservation status" (PDF). Chelonian Research Monographs. 5. Archived from the original (PDF) on 2012-01-22.
- Haaramo, Mikko (2008): Mikko's Phylogeny Archive - Trionychoidea. Version of 2008-MAR-11. Retrieved 2008-MAY-06.
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