plural noun

: a large family of extinct Eocene and Oligocene mammals (order Perissodactyla) that were widely distributed in the northern hemisphere and included the titanotheres and a number of related animals

Word History


New Latin, from Brontotherium, type genus + -idae

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Dictionary Entries Near Brontotheriidae

Cite this Entry

“Brontotheriidae.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2024.

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