After Wang, Tedford & Taylor, 1999

    †Cynarctoides McGrew, 1938
        †Cynarctus Barbour & Cook, 1914
        †Canis Cope, 1879b
        †Galecynus Cope, 1881b
        †Cynodictis Scott, 1898
        †Nothocyon Wortman & Matthew, 1899
        †Nothocyon Matthew, 1899
        †Nothocyon Merriam, 1906
        †Cynodictis? Merriam, 1906
        †Nothocyon Peterson, 1907
        †Nothocyon Thorpe, 1922a (in partim)
        †Bassariscops Peterson, 1928
        †Nothocyon Hall & Martin, 1930
        †Nothocyon Hough, 1948
        †Nothocyon Macdonald, 1963
        †Nothocyon Macdonald, 1970
        †Bassariscops Frailey, 1989
        †“Cormocyon” Fremd & Wang, 1995
        †Nothocyon Munthe, 1998
        †Cynarctoides McGrew; Wang, Tedford & Taylor, 1999

        †Cynarctoides lemur (Cope, 1878)
            †Canis lemur Cope, 1879b
            †Galecynus lemur (Cope); Cope, 1881b
            †Galecynus lemur (Cope); Cope, 1883
            †Galecynus lemur (Cope); Cope, 1884
            †Cynodictis lemur (Cope); Scott, 1898
            †Nothocyon Wortman & Matthew, 1899
            †Nothocyon Matthew, 1899
            †Nothocyon Merriam, 1906
            †Cynodictis? Merriam, 1906
            †Nothocyon Peterson, 1907
            †Nothocyon Thporpe, 1922a (in partim)
            †Bassariscops ÅPeterson, 1928
            †Nothocyon Hall & Martin, 1930
            †Nothocyon Hough, 1948
            †Nothocyon Macdonald, 1963
            †Nothocyon Macdonald, 1970
            †Bassariscops Frailey, 1989
            †“Cormocyon” Fremd & Wang, 1995
            †Nothocyon Munthe, 1998
            †Cynarctoides McGrew; Wang, Tedford & Taylor, 1999

        †Cynarctoides harlowi (Loomis, 1932)
            †Pachycynodon harlowi Loomis, 1932

        †Cynarctoides roii (Macdonald, 1963)
            ?Phlaocyon Peterson, 1924
            Nothocyon roii Macdonald, 1963
            Nothocyon roii Macdonald; Macdonald, 1970

        †Cynarctoides luskensis Wang, Tedford & Taylor, 1999
            †Cynarctoides luskensis Wang, Tedford & Taylor, 1999

        †Cynarctoides gawnae Wang, Tedford & Taylor, 1999
            †Cynarctoides, new species B; Gawne, 1975
            †Cynarctoides gawnae Wang, Tedford & Taylor, 1999

        †Cynarctoides acridens (Barbour & Cook, 1914)
            †Cynarctoides mustelinus Matthew, 1932
            †Cynarctus acridens Barbour & Cook, 1914
            †Cynarctus acridens Barbour & Cook; McGrew, 1937
            †Nothocyon annectens Peterson, 1907; Thorpe, 1922b (in partim)
            †Cynarctus mustelinus Matthew, 1932
            †“Cynarctus” acridens (Barbour and Cook); Matthew, 1932
            †Cynarctoides acridens (Barbour & Cook); McGrew, 1938a (in partim)
            †Cynarctoides acridens (Barbour & Cook); Galbreath, 1956
            †Cynarctoides acridens (Barbour & Cook); Munthe, 1988
            †Cynarctoides mustelinus (Matthew); Galbreath, 1956
            †Cynarctoides mustelinus (Matthew); Munthe, 1998
            †Nothocyon near latidens (Cope, 1881b); Macdonald, 1963
            †Nothocyon aff. minor (Matthew, 1907); Gawne, 1975
            †Cynarctoides, new species A; Gawne, 1975
            †Cynarctoides cf. C. acridens (Barbour & Cook); Galusha, 1975b
            †Cynarctoides acridens (Barbour & Cook); Wang, Tedford & Taylor, 1999

        †Cynarctoides emryi Wang, Tedford & Taylor, 1999
            †Cynarctoides acridens (Barbour & Cook, 1914); McGrew, 1938a (in partim)
            †Cynarctoides emryi Wang, Tedford & Taylor, 1999

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