[Class] Cestoda - tapeworms see Infraclass Cestoda Order Diphyllidea Lankester, 1877 [monotypic] Family Echinobothriidae Perrier, 1897 Genus Halysioncum Caira, Marques, Jensen, Kuchta & Ivanov, 2013 Halysioncum mexicanumᵀ (Tyler & Caira, 1999)