Echinodermata
Genus

Proctocystis Regnéll, 1945

Selection of related publications
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study.Meddelanden från Lunds Geologisk-Mineralogiska Institution 108 , 1-255.
List of species
References based on distribution