In cirripeds, general term for hard parts of balanomorphs including compartment plates, basis (if calcareous), and opercular valves [Moore and McCormick, 1969].
(Order Cladocera):
Carapace [Stachowitsch, 1992].
(Order Diplostraca):
Carapace [Stachowitsch, 1992].
(Subclass Cirripedia):
In unstalked barnacle, general term for hard elements surrounding body; includes compartmental plates, basis (if calcareous), and opercular valves [Stachowitsch, 1992].
(Class Ostracoda):
Carapace [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.