plural noun
Bran·​chi·​op·​o·​da | \ ˌbraŋ-kē-ˈä-pə-də\

Definition of Branchiopoda

1 : a subclass of crustacea comprising primitive aquatic forms typically having an elongated body, a carapace, and many pairs of foliaceous appendages and including the orders Anostraca, Notostraca, Conchostraca, and Cladocera

2 in some especially former classifications

a : an order of Entomostraca including the Cladocera
b : an order of Phyllopoda excluding the Cladocera
c : phyllopoda

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History and Etymology for Branchiopoda

New Latin, from branchi- + -poda

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