Heterobranchia Burmeister, 1837

Cephalaspidea P. Fischer, 1883

Family: Aglajidae Pilsbry, 1895

Family: Alacuppidae Oskars, Bouchet & Malaquias, 2015

 
 

Family: Bullidae Gray, 1827

   
   

Family: Cylichnidae H. Adams & A. Adams, 1854

   
   

Family: Phylinidae Gray, 1850

Family: Haminoeidae Pilsbry, 1895

Family: Laonidae Pruvot-Fol, 1954

 
 

Family: Retusidae Thiele, 1925

 
 

Family: Rhizoridae Dell, 1952