Classification of Evans and King 2012
Subcl. Nautiloidea Agassiz 1847 [nautiloid]
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Or. †Bisonocerida Evans and King 2012
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Fm. †Bisonoceratidae Evans and King 2012
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G. †Bisonoceras Flower 1964
G. †Disphenoceras Flower 1964
G. †Parapiloceras Obata 1939
Fm. †Chihlioceratidae Grabau 1922
Fm. †Emmonsoceratidae Flower 1958
Fm. †Humeoceratidae Teichert et al. 1964
Fm. †Manchuroceratidae Kobayashi 1935
Fm. †Piloceratidae Miller 1889
Fm. †Proterovaginoceratidae Evans and King 2012
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G. †Chazyoceras Flower 1958
G. †Perkinsoceras Flower 1976
G. †Proterovaginoceras Ruedemann 1905
Invalid names: Sinoendoceratidae Lai 1985 [empty]