[Class] Cestoda - tapeworms see Infraclass Cestoda Order Onchoproteocephalidea Caira, Jensen, Waeschenbach, Olson & Littlewood, 2014 Genus Pinguicollum Riser, 1955 [monotypic] 1 Pinguicollum pinguicollumᵀ (Sleggs, 1927)