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Eumetazoa (metazoans)- 
    
Bilateria (bilaterally symmetrical animals)- 
    
Protostomia (protostomes)- 
    
    
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Arthropoda (arthropods)- 
    
Crustacea (shrimps, crabs, lobsters, water fleas, and relatives)- 
    
Class Maxillopoda- 
    
Class Malacostraca- 
    
Order Amphipoda- 
    
Superfamily Caprelloidea- 
    
Family Caprellidae- 
    
Genus Caprella- 
    
Species Caprella laeviuscula
 
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