[Class] Cestoda - tapeworms see Infraclass Cestoda Order Lecanicephalidea Hyman, 1951 Family Tetragonocephalidae Yamaguti, 1959 [monotypic] Genus Tetragonocephalum Shipley & Hornell, 1905 Tetragonocephalum uarnak (Shipley & Hornell, 1906)