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Eumetazoa (metazoans)- 
    
Bilateria (bilaterally symmetrical animals)- 
    
Protostomia (protostomes)- 
    
    
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Lophophorates (lophophorates)- 
    
    
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Order Cheilostomata- 
    
Suborder Anasca- 
    
Family Arachnopusiidae- 
        
Genus Arachnopusia
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Genus Briarachnia
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Genus Tremogasterina
 
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