head shield
See: cephalic shield [Brusca and Brusca, 2002].
(Order Cladocera):
Variously developed, unpaired, shield-like structure covering head [Stachowitsch, 1992].
(Class Cephalocarida):
Cephalic shield [Stachowitsch, 1992].
(Class Remipedia):
Cephalic shield [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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