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The Echinoid Directory

Silurocidaris Regnell, 1956, p. 165

Diagnostic Features	Test unknown. Primary spines clavate, up to about 10 mm in length; smooth, bulbous head and narrow neck; base perforate.
Distribution	Upper Silurian (Ludlow), Baltic.
Name gender	feminine
Type	Silurocidaris clavata Regnell, 1956, p. 165, by original designation.
Species Included	Only the type species.
Classification and/or Status	Stem group Echinoidea. Monotypic; indeterminate.
Remarks	Although it is likely that these spines come from a sea-urchin, until associated plates are found the affinities of this taxon will remain impossible to determine. Regnell, G. 1956. Silurian echinoids from Gotland. Arkiv Mineralogi Geologi 2(7), 155-178.