Echinodermata

Glyptosphaeritidae Bernard, 1895

Selection of related publications
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Jefferies, R. P. S., Joysey, K. A., Paul, C. R. C., Ramsbottom, W. H. C. 1967. The Fossil Record a symposium with dokumentation. Chapter 21 Echinodermata: Pelmatozoa. The Fossil Record, pp. 565-581.
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study. Meddelanden från Lunds Geologisk-Mineralogiska Institution 108, 1-255.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea.