Classification of the genus Oistoceras
Subg. †Aegoceras (Oistoceras) Buckman 1911
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†Aegoceras (Oistoceras) colubrinum Spath 1938
†Aegoceras (Oistoceras) curvicorne Schloenbach 1863
†Aegoceras (Oistoceras) orbignyi Spath 1938
†Aegoceras (Oistoceras) samontaensis Meister 1986
†Androgynoceras (Oistoceras) angulatum Quenstedt 1856
†Androgynoceras (Oistoceras) figulinum Simpson 1855
†Oistoceras compressum Smith and Tipper 1996
†Oistoceras crescens Hyatt 1867