Echinodermata

Edrioasteroidea Billings, 1858

Selection of related publications
Bockelie, J. F., Paul, C. R. C. 1983. Cyathotheca suecica and its bearing on the evolution of the Edrioasteroidea. Lethaia 16, 4, 257-264. DOI:10.1111/j.1502-3931.1983.tb02006.x
Rõõmusoks, A. 1981. Ordovician and Silurian Strophomenida of Estonia, III. Genus Thaerodonta Wang. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 30, 2, 61-71.
Franzén, C. 1979. Echinoderms. Sveriges Geologiska Undersökning 73, 3, 216-224. Lower Wenlock faunal and floral dynamics - Vattenfallet section, Gotland. Eds: Jaanusson, V. et al., pp. 216-224.
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study. Meddelanden från Lunds Geologisk-Mineralogiska Institution 108, 1-255.
Hecker, R. F. 1939. Pyrgocystis iz nižnego silura Leningradskoj oblasti. Известия Академии Наук СССР. Серия биологическая , , 241-246.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea.