[organisms]
 see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
  
 Phylum Annelida Lamarck, 1809 - segmented worms
    
 Class Polychaeta Grube, 1850 - polychaetes
      
 Family Apistobranchidae Mesnil & Caullery, 1898
        
 1 Genus Apistobranchus Levinsen, 1883[1884]