Nautilus victorianus (FOSSIL) Teichert, 1943 †
Eutrephoceras waageni (FOSSIL) (C. Gemmellaro, 1886 †)
Pseudocenoceras warsanofievie (FOSSIL) Shimansky, 1951 †
Nautilus winslowi (FOSSIL) F.B. Meek & A.H. Worthen,1873 †
Pseudocenoceras xenium (FOSSIL) Shimansky, 1975 †
Kummelonautilus yamashitai (FOSSIL) (T. Matsumoto, 1983 †)
Kummelonautilus yezoensis (FOSSIL) (E. Matsumoto, 1983 †)