Classification of Branger 2004
Or. Nautilida Agassiz 1847
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Fm. †Cenoceratidae Tinant and Kabamba 1983
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G. †Cenoceras Hyatt 1884
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†Cenoceras baberi Morris and Lycett 1850
†Cenoceras mazardrikense Sarker 1964
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Invalid names: Procymatoceras pictonicum Tinant 1969 [synonym]
G. †Ophionautilus
G. †Pictonautilus Branger 2004
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†Pictonautilus clavifer Tinant 1994
†Pictonautilus verciacensis Lissajous 1923