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Temporal range: late Palaeocene - Recent
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Eutheria
Superorder: Laurasiatheria
(unranked): Cetartiodactyla
Humpback Whale breaching.
Pod of hippopotamuses, Luangwa Valley, Zambia.

Cetartiodactyla is the taxonomical superorder which includes whales (and dolphins) and even-toed ungulates. The name was created by merging the name for the two orders, Cetacea and Artiodactyla, into a single word. Cetartiodactyla is commonly used because it is thought that whales evolved from the artiodactyls. Because of this, their closest living land relative is thought to be the hippopotamus.