Classification of Sobolev 1998

G. †Gryponautilus Mojsisovics 1902
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Gryponautilus truschelevi Sobolev 1998
G. †Proclydonautilus Mojsisovics 1902
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G. †Syringoceras Hyatt 1894
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Syringoceras nekuchanicum Sobolev 1998
G. †Syringonautilus Mojsisovics 1902
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Syringonautilus arcticus Sobolev 1998
Fm. †Tainoceratidae Hyatt 1883
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G. †Sibyllonautilus Diener 1915
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Sibyllonautilus abditus Sobolev 1998
Sibyllonautilus darkensis Sobolev 1998