Heterobranchia Burmeister, 1837

Order: Nudibranchia Cuvier, 1817 - Suborder: Cladobranchia

Family: Tritoniidae Lamarck, 1809

   
   

Family: Hancockiidae MacFarland, 1923

   
   

Family: Scyllaeidae Alder & Hancock, 1855

   
   

Family: Tethydidae Rafinesque, 1815

 
 

Family: Dotidae Gray, 1853

   
   

Family: Janolidae Pruvot-Fol, 1933

   
   
Family: Arminidae Iredale & O'Donoghue, 1841
 
 

Family: Coryphellidae Bergh, 1889

   
   

Family: Flabellinidae Bergh, 1889

Family: Samlidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017

Family: Piseinotecidae Edmunds, 1970

   

Family: Aeolidiidae Gray, 1827

Family: Facelinidae Bergh, 1889

Family: Myrrhinidae Bergh, 1905

 

Family: Eubranchidae Odhner, 1934

 

Family: Fionidae Gray, 1857

Family: Embletoniidae Pruvot-Fol, 1954

   

Embletonia pulchra (Alder & Hancock, 1844)

   

Family: Trinchesiidae F. Nordsieck, 1972

Trinchesia morrowae Korshunova, Picton, Furfaro, Mariottini, Pontes, Prkić, Fletcher, Malmberg, Lundin & Martynov, 2019 Trinchesia ocellata (Schmekel, 1966)