After Wang, Tedford & Taylor, 1999

Rhizocyon Wang, Tedford & Taylor, 1999
        Canis Cope, 1879a
        Galecynus Cope, 1883
        Galecynus Cope, 1884
        Cynodictis Wortman & Matthew, 1899
        Cynodictis? Merriam, 1906
        Cynodictis? Merriam & Sinclair, 1907
        Cynodictis? Thorpe, 1922a
        Cynodictis Matthew, 1909
        Nothocyon Hall & Martin, 1930
        Nothocyon Macdonald, 1970
        Cormocyon Fremd & Wang, 1995
        †Rhizocyon Wang, Tedford & Taylor, 1999

        †Rhizocyon oregonensis (Merriam, 1906)
            Canis gregarius Cope, 1879a
            Canis lippincottianus Cope, 1879a
            Galecynus gregarius (Cope); Cope, 1883
            Galecynus gregarius (Cope); Cope, 1884
            Cynodictis lippincottianus (Cope); Cope, 1884
            Cynodictis gregarius (Cope); Wortman & Matthew, 1899
            Cynodictis? oregonensis Merriam, 1906
            Cynodictis? oregonensis Merriam; Merriam & Sinclair, 1907
            Cynodictis? oregonensis Merriam; Thorpe, 1922a
            Cynodictis oregonensis (Merriam); Matthew, 1909
            Nothocyon oregonensis (Merriam); Hall & Martin, 1930
            Nothocyon lemur (Cope, 1879b); Macdonald, 1970
            Cormocyon oregonensis (Merriam); Fremd & Wang, 1995
            †Rhizocyon oregonensis (Merriam); Wang, Tedford & Taylor, 1999

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