After McKenna & Bell, 1997, and Alroy, 2002

Labidolemur Matthew & Granger, 1921
        †Apatemys Marsh, 1872; McKenna & Bell, 1997

        †Labidolemur major West, 1972

        †Labidolemur kayi Simpson, 1929a
            †Labidolemur kayi Simpson, 1929a
            †Apatemys kayi; McKenna, 1960
            †Apatemys kayi; McKenna, 1961
            †Apatemys kayi; McKenna, 1963
            †Apatemys bellus; West, 1973c;
            †Apatemys kayi; Krishtalka et al., 1975
            †Apatemys kayi; D. Russell et al., 1979
            †Apatemys kayi; Bown & Schankler, 1982
            †Labidolemur kayi; Gingerich & Rose, 1982
            †Labidolemur kayi; Gunnell, 1989
            †Labidolemur kayi Simpson; Alroy, 2002

        †Labidolemur serus Gingerich, 1982e

        †Labidolemur soricoides Matthew & Granger, 1921

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