| Contents | Class | Order |
Order Cryptogemmida Jankowski, 1975
Fam. Actinichonidae Jankowski, 1973Fam. Echinichonidae Jankowski, 1973
Fam. Inversochonidae Jankowski, 1973
Fam. Isochonidae Jankowski, 1973
Fam. Isochonopsidae Batisse & Crumeyrolle, 1988
Fam. Stylochonidae Mohr, 1948