ammonites
Family Trionychidae Gray 1825 (softshell turtle)

Reptilia - Testudines

Invalid subtaxa: Aspideretes jaxarticus Riabinin 1938 [nomen nudum], Plastomenus jaxarticus Riabinin 1938 [nomen nudum]

Parent taxon: Trionychoidea according to O. P. Hay 1908

Sister taxa: Basilochelys, Carettochelyidae, Peltochelyidae

Subtaxa: Amyda, Aspideretes, Conchochelys, Crassithecachelys, Cyclanorbis, Cycloderma, Eugenechelys, Eurycephalochelys, Gilmoremys, Hummelichelys, Lissemys, Paleotrionyx, Plastomeninae, Platypeltis, Rafetini, Sinamyda, Sinaspideretes, Temnotrionyx, Trionychinae, Zangerlichelys

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Ecology: aquatic piscivore-carnivore