Imperium naturæ C. Linnaeus, 1758 - nature
Mundus Plinius - physical world
naturalia - natural bodies
Regnum Animale C. Linnaeus, 1758 - animal kingdom
see Kingdom Animalia Linnaeus, 1758
Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Order Anseres Linnaeus, 1758
see Suborder Anseres Linnaeus, 1758
Genus Mergus Linnaeus, 1758
Mergus cucullatus Linnaeus, 1758
see Lophodytes cucullatus (Linnaeus, 1758)