Classification of the genus Cyathocoenia
G. †Cyathocoenia Duncan 1867
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†Cyathocoenia alpina Gümbel 1861
†Cyathocoenia dendroidea Duncan 1867
†Cyathocoenia minor Melnikova 1975
†Cyathocoenia parva Smith 1927
†Cyathocoenia shastensis Smith 1927
†Cyathocoenia squiresi Stanley, Jr. 1986