Class Mammalia Linnaeus, 1758 - mammals
Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises
see Infraorder Cetacea Brisson, 1762
Suborder Odontoceti Flower, 1867 - toothed whales
see Parvorder Odontoceti Flower, 1867
Family Delphinidae Gray, 1821 - oceanic dolphins
Genus Sotalia Gray, 1866 - tucuxi
Sotalia fluviatilis (Gervais & Deville, in Gervais, 1853) - tucuxi