Classification
Triops longicaudatus is a member of the crustacean class Branchiopoda, which primarily contains freshwater animals with gills on their legs. The class Branchiopoda is divided into the subclasses Sarsostraca, containing fairy shrimp, and Phyllopoda, containing all other members (cladocerans, clam shrimps, and the tadpole shrimp). The subclass name, literally meaning leaf-footed, is derived from their flat, leaflike appendages. Notostracans are placed in the infraclass Calamanostraca, which also contains the extinct Kazacharthra.
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