Classification of the genus Callicylix

G. †Callicylix Schrammen 1912
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Subg. †Callicylix (Callicylix) Reid 2004
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Subg. †Callicylix (Cyclostigma) Schrammen 1912
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Callicylix (Cyclostigma) tubulosa Lagneau-Herenger 1962
Cyclostigma kiltorkense Doweld 2001
Callicylix eocenicus Pisera and Busquets 2002
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Invalid names: Centrosia viquensis Matteucci and Russo 2005 [synonym], Plocoscyphia roemeri Leonhard 1897 [synonym]