Semibalanus is a genus of barnacles, comprising four species. It is the only genus in the subfamily Semibalaninae.
Species These species belong to the genus Semibalanus: Semibalanus balanoides (Linnaeus, 1767) (northern acorn barnacle) Semibalanus cariosus (Pallas, 1788) (thatched barnacle) Semibalanus madrasensis (Daniel, 1958) Semibalanus sinnurensis (Daniel, 1962)
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