Figure 1.

Representatives of Cirripedia. From left to right: a goose barnacle (Thoracica, Lepadidae); an Indo-Pacific giant acorn barnacle (Thoracica, Balanidae); and the externa of a parasitic Sacculina (Rhizocephala) sitting under the abdomen of a crab.

Scholtz Journal of Biology 2008 7:16   doi:10.1186/jbiol77
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