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Lepas anatifera: rostral view; and left valve and cirri removed.

From: Anderson, D. T. 1980. Barnacles - structure, function, development and evolution. Chapman and Hall London..

This image is referenced by the following definitions:

Aperture  [Anderson, 1980]
Cirri  [Anderson, 1980]
Oral cone  [Anderson, 1980]
Peduncle  [Anderson, 1980]
Penis  [Anderson, 1980]
Prosoma  [Anderson, 1980]
Scutal adductor  [Anderson, 1980]
Scutum  [Anderson, 1980]
Tergum  [Anderson, 1980]