Echinodermata

Sphaeronites (Peritaphros) variabilis Paul et Bockelie, 1983

Selection of related publications
Paul, C. R. C., Bockelie, J. F. 1983. Evolution and Functional Morphology of the Cystoid Sphaeronites in Britain and Scandinavia. Palaeontology 26, 4, 687-734.
References based on distribution