[Kingdom] Animalia Linnaeus, 1758 - animals
Grade Enterozoa
Grade Cœlomata
Phylum Vertebrata (Lamarck, 1801)
Branch Craniata Linnaeus, 1758
Grade Gnathostoma
Subgrade Pentadactyla lipobranchia
Branch Amphicondyla [monotypic]
Class Mammalia Linnaeus, 1758 - mammals
Grade Placentalia Owen, 1837
see Cohort Placentalia Owen, 1837
Subclass Carnaria
Order Pinnipedia Illiger, 1811 - seals, sea lions, and walrus
see Parvorder Pinnipedia Illiger, 1811
1 Genus Phoca Linnaeus, 1758 - harbor, ringed, harp, and ribbon seals
2 Genus Trichecus Müller, 1773
see Genus Trichechus Linnaeus, 1758