This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
A. B. Smith, 1982 - Revision of the Class Cyclocystoidea (Echinodermata) - Philosophical Transactions of the Royal Society of London, Series B (296), 577-679 (serial monograph, English)
G. Regnéll, 1945 - Non-Crinoid Pelmatozoa from the Paleozoic of Sweden - Meddelanden från Lunds Geologisk-Mineralogiska Institution (108), 1-255 (journal article, English)
J. W. Salter, 1858 - On Cyclocystoides, a new genus of Echinodermata from the Lower and Middle Silurian Rocks - Canada Geological Survey, Figures and Descriptions of Canadian Organic Remains (Decade 3), 86-90 (journal article, English)