Fol, 1872
Corresponding to that of the family, since only a single genus has been recognized. Two species, both recorded from the South Atlantic Ocean. Kowalevskia mossi, erected by Lohmann and Hentschel (1939), was synonymized with Kowalevskia tenuis by Fenaux (1966).
Kowalevskia tenuis
Kowalevskia oceanica