Echinodermata

Apycnodiscus Smith et Paul, 1982

Selection of related publications
Reich, M. Kutscher, M. 2010. Cyclocystoids (Echinodermata: Echinozoa) from silurian of gotland, Sweden. Proceedings of the 12th International Echinoderm Conference, Durham, New Hampshire, USA, 7-11 August 2006, pp. .
Männil, Ralf 1987. Ordovician cyclocystoids of Baltic. Problems of phylogenese and taxonomy of echinoderms. Abstracts, pp. 71-72.
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study. Meddelanden från Lunds Geologisk-Mineralogiska Institution 108, 1-255.