WWhite River (Missouri River tributary)WArchaeotheriumWBathornisWBathornithidaeWBlastomeryxWCynodesmusWDaeodonWDaphoeninaeWDaphoenusWDiceratheriumWDinictisWEnhydrocyonWEporeodonWGomphotheriumWHoplophoneusWHyaenodonWHypertragulusWHyracodonWIschyromysWLeptaucheniaWLeptictisWLeptomeryxWMegaceropsWMegalictisWMerycoidodonWMerycoidodontoideaWMesocyonWMesohippusWMesoreodonWMetamynodonWMoropusWPalaeocastorWPalaeolagusWParahippusWPoebrotheriumWPromerycochoerusWProtapirusWProtocerasWStylemysWSubhyracodonWSyndyocerasWTemnocyonWTemnocyoninaeWTrigonias