Invalid names: Astrocyathus geinitzi Ludwig 1866 [synonym], Cyathaxonia herbsti Ludwig 1869 [synonym], Cyathophyllum plarrei Eisel 1900 [synonym], Cyathophyllum profundum Germar 1842 [synonym], Tetraphyllum profundum Ludwig 1865 [synonym], Zaphrentis callosa Ludwig 1869 [synonym]