coryphodon

from The Century Dictionary.

• noun [lowercase] A mammal of the genus Coryphodon.
• noun A genus of fossil Eocene quadrupeds, of the subungulate series, by some referred to the Amblypoda (which see).

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

• noun (Paleon.) A genus of extinct mammals from the eocene tertiary of Europe and America. Its species varied in size between the tapir and rhinoceros, and were allied to those animals, but had short, plantigrade, five-toed feet, like the elephant.