Classification of the genus Aulacostephanus
G. †Aulacostephanus
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Subg. †Aulacostephanus (Aulacostephanoceras) Ziegler 1962
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†Aulacostephanus (Aulacostephanoceras) autissiodorensis Cotteau 1868
†Aulacostephanus (Aulacostephanoceras) kirghisensis d'Orbigny 1845
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Invalid names: Hoplites syrti Pavlov 1886 [synonym]
†Aulacostephanus (Aulacostephanoceras) lopsiensis Mesezhnikov 1984
†Aulacostephanus (Aulacostephanoceras) pseudolinealis Mesezhnikov 1969
†Aulacostephanus (Aulacostephanoceras) undorae Pavlov 1886
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Invalid names: Aulacostephanus plataulax Buckman 1925 [synonym], Hoplites subundorae Pavlov 1886 [synonym]
†Aulacostephanus (Aulacostephanoceras) volgensis Vischniakoff 1875
Subg. †Aulacostephanus (Aulacostephanoides) Schindewolf 1925
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†Aulacostephanus (Aulacostephanoides) desmonotus Oppel 1863
†Aulacostephanus (Aulacostephanoides) sosvaensis Sasonov 1960
Subg. †Aulacostephanus (Aulacostephanus) Sutner and Pompeckj 1896
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†Aulacostephanus (Aulacostephanus) pinguis Ziegler 1962
†Aulacostephanus (Aulacostephanus) sagittatus Ziegler 1962
†Aulacostephanus (Aulacostephanus) yo d'Orbigny 1850
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†Aulacostephanus (Pararasenia) pischmae Khudyaev 1932
†Aulacostephanus (Pararasenia) quenstedti Durand 1933
†Aulacostephanus (Pararasenia) semieudoxus Schneid 1939
†Aulacostephanus (Pararasenia) subhibridus Mesezhnikov 1984
†Aulacostephanus (Pararasenia) tobolicus Khudyaev 1929
Invalid names: Ammonites hector d'Orbigny 1850 [nomen oblitum]
†Aulacostephanus erinus d'Orbigny 1850
†Aulacostephanus eudoxus d'Orbigny 1850
Invalid names: Odontoceras Steuer 1897 [synonym], Tobolia Sasonov 1960 [synonym]