xiphodon

from The Century Dictionary.

• noun A genus of fossil artiodactyl mammals, of Eocene age and small size, now referred to the Dichobunidæ.

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

• noun (Paleon.) An extinct genus of artiodactylous mammals found in the European Tertiary formations. It had slender legs, didactylous feet, and small canine teeth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A an extinct camel-like animal of genus, Xiphodon.