Notocotylus attenuatus (Rudolphi, 1809) Kossack, 1911
Notocotylus seineti Fuhrmann, 1919 (uncertain > taxon inquirendum )
Notocotylus skrjabini Ablasov, 1953
Ogmogaster antarctica Johnston, 1931
Ogmogaster plicata (Creplin, 1829) Jägerskiöld, 1891
Paramonostomum alveatum (Mehlis in Creplin, 1846) Lühe, 1909
Paramonostomum anatis Garkavi, 1965
Paramonostomum bucephalae Yamaguti, 1935
Paramonostomum chabaudi Van Strydonck, 1965
Paramonostomum parvum Stunkard & Dunihue, 1931
Paramonostomum pseudalveatum Price, 1931 accepted as Paramonostomum parvum Stunkard & Dunihue, 1931
Pseudonotocotylus atlanticus (Stunkard, 1966) Izrailskaia, Tatonova & Belousova, 2024