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Whippomorpha or Cetancodonta is a group of artiodactyls that contains all living cetaceans (whales, dolphins, and porpoises) and the hippopotamids. [1] All whippomorphs are descendants of the last common ancestor of Hippopotamus amphibius and Tursiops truncatus.
However, the earliest anthracotheres, the ancestors of hippos, do not appear in the fossil record until the Middle Eocene, millions of years after Pakicetus, whereas the first known whale ancestor appeared during the Early Eocene; this difference in timing implies that the two groups diverged well before the Eocene. Molecular analysis ...
Anthracotheriidae is a paraphyletic family of extinct, hippopotamus-like artiodactyl ungulates related to hippopotamuses and whales. The oldest genus, Elomeryx, first appeared during the middle Eocene in Asia. They thrived in Africa and Eurasia, with a few species ultimately entering North America during the Oligocene.
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος () 'huge fish, sea monster') [3] is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises.
Besides elephants and rhinoceroses, hippopotamuses are the largest living land animal. Though they resemble giant pigs, their closest relatives are cetaceans like whales and porpoises. Hippos are ...
The hippos (Hippopotamidae) comprise two groups, the common hippo and the pygmy hippo. The cetaceans comprise 72 species and two parvorders: toothed whales ( Odontoceti ) and baleen whales ( Mysticeti )
The pygmy hippopotamus or pygmy hippo (Choeropsis liberiensis) is a small hippopotamid which is native to the forests and swamps of West Africa, primarily in Liberia, with small populations in Sierra Leone, Guinea, and Ivory Coast. It has been extirpated from Nigeria. [1] The pygmy hippo is reclusive and nocturnal.
A grown pygmy hippopotamus can weigh between 400 to 600 pounds, while larger, fully-grown hippos can weigh up to 9,920 pounds and 3,000 pounds, depending if they’re male or female.