article: Cetacea
links: Eutheria Suborder Odontoceti Monodontidae Cuvier's beaked whale Cetartiodactyla Humpback whale Porpoise Animal Archaeoceti Baleen whale Narwhal Blue whale Laurasiatheria Chordate Toothed whale Balaenopteridae Phocoenidae Right whale Orca Fin whale Whale Mammal Eocene Mysticeti Gray whale Oceanic dolphin Bowhead whale Delphinidae Beluga whale Sperm whale River dolphin Southern right whale Platanistoidea Rorqual