Ischyromyidae

plural noun

Is·​chy·​ro·​my·​i·​dae

ˌiskə̇rōˈmīəˌdē

: a family of primitive extinct sciuromorph rodents widely distributed in the northern hemisphere from the Lower Eocene to the Upper Oligocene, distantly related to the mountain beaver, and distinguished by low-crowned generalized cheek teeth

Word History

Etymology

New Latin, from Ischyromys, type genus (from Greek ischyros strong + mys mouse) + -idae; akin to Greek echein to have, hold

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