†Chitinozoa Eisenack, 1931 - chitinozoans Order †Operculatifera Eisenack, 1931 Family †Desmochitinidae Eisenack, 1931 Subfamily †Margachitininae Paris, 1981 1 Genus †Linochitina Eisenack, 1968 2 Genus †Margachitina Eisenack, 1968 3 Genus †Urnochitina Paris, 1981