[Class] Cestoda - tapeworms see Infraclass Cestoda
   Order Onchoproteocephalidea Caira, Jensen, Waeschenbach, Olson & Littlewood, 2014
     Family Proteocephalidae La Rue, 1911
       Subfamily Monticelliinae Mola, 1929 [non-monophyletic]
         Genus Spatulifer Woodland, 1934
           1 Spatulifer surubimᵀ Woodland, 1934
           2 Spatulifer maringaensis Pavanelli & Rego, 1989
           3 Spatulifer rugosa (Woodland, 1935)