Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Mammalia - (Family) Phocidae
Original position
Original entries
	
		| †Acrophoca (Genus) de Muizon, 1981 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| †Homiphoca (Genus) de Muizon & Hendey, 1980 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| Hydrurga (Genus) Gistel, 1848 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| Leptonychotes (Genus) Gill, 1872 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| Lobodon (Genus) Gray, 1844 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| Ommatophoca (Genus) Gray, 1844 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
	
		| †Piscophoca (Genus) de Muizon, 1981 |  | 
			Ref: Tedford, (R.H.), 1997: 260. | 
	
Current position
	Historical positions
	
		Number of Subtaxa