Subclass Opisthobranchia
(opisthobranchs)

Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.

• Parent taxa
  
  
  
•  
  Class Gastropoda (gastropods, slugs, and snails)
•  
  Subclass Opisthobranchia (opisthobranchs)
•  
  Order Acochlidioidea
•  
  Order Anaspidea
•  
  Order Cephalaspidea
•  
  Order Gymnosomata
•  
  Order Notaspidea
•  
  Order Nudibranchia (nudibranchs)
•  
  Order Sacoglossa
•  
  Order Soleolifera
•  
  Order Thecosomata