Jack I see what you mean, a Wharncliffe would have at least half of its length curved, but parallel behind the curve, whereas a sheepfoot would be parallel for more than half of its length, curving to the point. A Lambfoot on the other hand tapers rather than being parallel and curves (at times abruptly) toward the point.
	
		
			
		
		
	
				
			 
	 
 
		 
 
 
  
 

 
 
		 
  
 
		 
	 
 
		