Temporal range: Early Cretaceous to recent, 125.45–0 Ma[1]
Trionyx triunguis Zoo Rostock 15-08-2008 084.jpg
T. triunguis, the only extant species
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Family: Trionychidae
Subfamily: Trionychinae
Genus: Trionyx
Geoffroy Saint-Hilaire, 1809

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 softshell still classified as Trionyx. The other species still assigned to this genus are only known from fossils. T. triunguis is a relatively large, aquatic piscivore.


† = extinct


  1. ^ "Trionyx". FossilWorks. Retrieved 17 December 2021.
  2. ^ a b c d Georgalis, Georgios L.; Joyce, Walter G. (2017). "A Review of the Fossil Record of Old World Turtles of the Clade Pan-Trionychidae" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (1): 115–208.
  3. ^ a b c d Igor G. Danilov; Ren Hirayama; Vladimir B. Sukhanov; Shigeru Suzuki; Mahito Watabe; Natasha S. Vitek (2014). "Cretaceous soft-shelled turtles (Trionychidae) of Mongolia: new diversity, records and a revision". Journal of Systematic Palaeontology. 12 (7): 799–832. doi:10.1080/14772019.2013.847870.
  4. ^ a b c Vitek, Natasha S.; Joyce, Walter G. (2015). "A Review of the Fossil Record of New World Turtles of the Clade Pan-Trionychidae". Bulletin of the Peabody Museum of Natural History.
  5. ^ Natasha S. Vitek; Igor G. Danilov (2014). "Soft-shelled turtles (Trionychidae) from the Cenomanian of Uzbekistan". Cretaceous Research. 49: 1–12. doi:10.1016/j.cretres.2014.01.004. hdl:2152/41076.