Classification of the genus Gordonicyathus
G. †Gordonicyathus Zhuravleva 1959
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†Gordonicyathus absolutus Okuneva and Repina 1973
†Gordonicyathus dorfi Handfield 1971
†Gordonicyathus howelli Vologdin 1932
†Gordonicyathus levis Gravestock 1984
†Gordonicyathus orientalis Okuneva and Repina 1973
†Gordonicyathus pledgei Gravestock 1984
†Gordonicyathus systylus Gravestock 1984
†Gordonicyathus walteri Gravestock 1984
Invalid names: Sichotecyathus Okuneva and Repina 1973 [synonym]