Trionyx

[Sarah]

A genus of fresh-water or river turtles which have the shellimperfectly developed and covered with a soft leathery skin. They arenoted for their agility and rapacity. Called also soft tortoise,soft-shell tortoise, and mud turtle.

[Magaret]

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.