Classification of the genus Clydoniceras
G. †Clydoniceras
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Subg. †Clydoniceras (Clydoniceras) Blake 1905
Subg. †Clydoniceras (Delecticeras)
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†Clydoniceras (Delecticeras) delectum Arkell 1951
†Delecticeras anjohense Collignon 1958
†Clydoniceras madagascariense Collignon 1958
†Clydoniceras pseudodiscus Arkell 1952
Invalid names: Benedictites Buckman 1924 [synonym], Harpoceratidarum Pompeckj 1906 [synonym]