†Chitinozoa Eisenack, 1931 - chitinozoans Order †Prosomatifera Eisenack, 1972 Family †Conochitinidae Eisenack, 1931 Subfamily †Tanuchitininae Paris, 1981 Genus †Tanuchitina Jansonius, 1964 †Tanuchitina ontariensis Jansonius, 1964