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Antennal formula 0-1-3 / 0-0-3. Postabdomen with more than 15 marginal denticles. Antennal formula 1-1-3 / 0-0-3. Postabdomen with 10-12 marginal denticles.
 
Taxonomy
Phylum Arthropoda
Subphylum Crustacea
Class Branchiopoda
Suborder Cladocera
Family Chydoridae