WWhite River (Missouri River tributary)WArchaeotheriumWBathornisWBathornithidaeWBlastomeryxWCynodesmusWDaeodonWDaphoeninaeWDaphoenusWDiceratheriumWDinictisWEnhydrocyonWEporeodonWGomphotheriumWHoplophoneusWHyaenodonWHypertragulusWHyracodonWIschyromysWLeptaucheniaWLeptictisWLeptomeryxWMegaceropsWMegalictisWMerycoidodonWMerycoidodontoideaWMesocyonWMesohippusWMesoreodonWMetamynodonWMoropusWPalaeocastorWPalaeolagusWParahippusWPoebrotheriumWPromerycochoerusWProtapirusWProtocerasWStylemysWSubhyracodonWSyndyocerasWTemnocyonWTemnocyoninaeWTrigonias
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