Trionychidae

plural noun

Tri·​onych·​i·​dae

ˌtrīəˈnikəˌdē

: a family of freshwater softshell turtles containing both fossil Tertiary and living forms in which the horny plates of carapace and plastron are replaced by leathery skin and constituting a distinct superfamily of Cryptodira

Word History

Etymology

New Latin Trionych-, Trionyx, type genus + -idae

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