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.
Upper Silurian (Ludlow), Baltic.
Name gender feminine
Silurocidaris clavata Regnell, 1956, p. 165, by original designation.
Species Included
  • Only the type species.
Classification and/or Status

Stem group Echinoidea.

Monotypic; indeterminate.


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.