Children (6 direct children, 19 direct and indirect children):
        
        
        
            
                Necturus
                
                    (tree size 11)
                
                
                
            
                Orthophyia
                
                
                
            
                Proteus
                
                    (tree size 2)
                
                
                
            
                Mioproteus
                
                
                
            
                Proteinae
                
                
                
            
                Necturinae