''Chthamalus fissus'' is a species of star barnacle in the family
Chthamalidae
The Chthamalidae are a family of chthamaloid barnacles, living entirely in intertidal/subtidal habitats, characterized by a primary shell wall of eight, six, or four plates, lacking imbricating plate whorls, and either membraneous or more rare ...
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Sessilia
{{crustacean-stub
Crustaceans described in 1854