Isoodon Desmarest, 1817 . Nouv. Diet. Hist. Nat., Nouv. ed., 16:409.

TYPE SPECIES: Didelphis obesula Shaw, 1797 .

SYNONYMS: Thylacis .

COMMENTS: Includes Thylacis of Haltenorth, 1958, which was an incorrect usage; see Van Deusen and Jones (1967:74) and Lidicker and Follett (1968). Revised by Lyne and Mort (1981).