from The Century Dictionary.

  • noun A genus of gigantic extinct perissodactyls, typical of the family Brontotheriidæ.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Paleon.) A genus of large extinct mammals from the miocene strata of western North America. They were allied to the rhinoceros, but the skull bears a pair of powerful horn cores in front of the orbits, and the fore feet were four-toed. See Illustration in Appendix.


Sorry, no etymologies found.


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