†Olgaecyathus Borodina 1974

Borodina 1974. [Archaeocyatha with latticed external walls.] Zhuravleva, I.T.; Rozanov, A.Yu.[Eds]. [Biostratigraphy and palaeontology of the Lower Cambrian of Europe and north Asia.], Nauka, Moscow, 1974: 124-137. Chapter pagination: 138-166