Classification of the genus Stephanocyathus
G. Stephanocyathus Seguenza 1864
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Subg. Stephanocyathus (Acinocyathus) Wells 1984
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Stephanocyathus (Acinocyathus) spiniger Marenzeller 1888
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Invalid names: Odontocyathus japonicus Yabe and Eguchi 1932 [synonym], Stephanotrochus tatei Dennant 1899 [synonym]
Subg. Stephanocyathus (Odontocyathus) Moseley 1881
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†Odontocyathus minor Kühn 1966
†Odontocyathus radiatus Gerth 1923
†Odontocyathus sieberi Kühn 1966
†Odontocyathus sundaicus Gerth 1923
Stephanocyathus (Odontocyathus) ixine Squires 1958
†Stephanocyathus holcombensis Durham 1942
†Stephanocyathus magnificus Gerth 1923
†Stephanocyathus tatei Dennant 1899