†Chitinozoa Eisenack, 1931 - chitinozoans Order †Operculatifera Eisenack, 1931 Family †Desmochitinidae Eisenack, 1931 Subfamily †Eisenackitininae Paris, 1981 Genus †Eisenackitina Jansonius, 1964 1 †Eisenackitina castor Jansonius, 1964