Morales and Pickford (2017, p. 346) diagnose Sectisodon as follows: "Hyainailourinae of small dimensions, M1 and M2 of similar length.

P3 short, with tall main cusp, posterior cusplet moderate, and much reduced protocone.

Lower molars with protoconid bigger than the metaconid, m2 with talonid present, much reduced in the m3.

"[2] Sectisodon markgrafi was originally assigned to genus Metapterodon by Holroyd (1999), who nonetheless recognized that Eocene and Oligocene hyainailourids he assigned to Metapterodon might prove generically distinct.

Subsequent study demonstrated referred M. markgrafi to Sectisodon based on shared similarities with S.