†Chitinozoa Eisenack, 1931 - chitinozoans Order †Operculatifera Eisenack, 1931 Family †Desmochitinidae Eisenack, 1931 Subfamily †Eisenackitininae Paris, 1981 Genus †Ordochitina Achab, Asselin & Soufiane, 1993 †Ordochitina tadlaiensis Achab et al., 1993