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Anus on dorsal side of postabdomen, generally with two rows of marginal denticles (md) with less than 80 teeth per side; typically less than 20 teeth per side.
Anus terminal, postabdomen with a single row of over 80 marginal denticles (md) creating a saw-like appearance.
Phylum Arthropoda
Subphylum Crustacea
Class Branchiopoda
Suborder Cladocera
Family Chydoridae