After McKenna & Bell, 1997

Issiodoromys Bravard, in Gervais, 1952
        Issiodoromys Anonymous, 1848-1852 (nomen nudum)
        Palanoema Pomel, 1853
        Palanaema Gervais, 1859
        Cournomys Zittel, 1893
    including:
        Nesokerodon Schlosser, 1884
        Nesocerodon Lydekker, 1885
        Oensingenomys Mayo, 1987

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