brontotherium

1 definition found

brontotherium - Collaborative International Dictionary of English v.0.48 :

  Brontotherium \Bron`to*the"ri*um\, n. [NL., fr. Gr. ? thunder +
     ? beast.] (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.
     [1913 Webster]