Artiodactyla Owen, 1841
Calops Marsh, 1894
Camelomeryx Scott, 1898
Heteromeryx Matthew, 1905
Kyptoceras Webb, 1981
Lambdoceras Stirton, 1967
Leptoreodon Wortman, 1898
Leptotragulus Scott & Osborn, 1887
Marshiceras Kretzoi & Kretzoi, 2000
Merycodesmus Scott, 1898
Parameryx Marsh, 1877
Paratoceras Frick, 1937
Poabromylus Peterson, 1932
Prosynthetoceras Frick, 1937
Protoceras Marsh, 1891
Pseudoprotoceras Cook, 1934
Syndyoceras Barbour, 1905
Synthetoceras Stirton, 1932
Toromeryx Wilson, 1974
Trigenicus Douglass, 1903
