1938Rhipidocystis esthona n. sp. — Hecker, pp. 422
1940Rhipidocystis esthona n. sp. — Hecker, pp. 18
Selection of related publications
Hecker, R. F. 1940.
Nižnesilurijskie i devonskie iglokožie. Carpoidea, Eocrinoidea i Ophiocistia nižnego silura Leningradskoj oblasti i Èstonii.Transactions of the Paleontological Institute (PIN)9,
4,5-82.