Entelodontidae

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Entelodontidae is an extinct family of pig-like artiodactyls (even-toed ungulates) that inhabited the Northern Hemisphere (Eurasia and North America) from the Middle Eocene to the Early Miocene epochs, about 45 to 19 million years ago. Their large heads, low snouts, narrow gait, and proposed omnivorous diets inspire comparisons to suids (true pigs) and tayassuids (peccaries), and historically they have been considered closely related to these families purely on a morphological basis. However, studies which combine morphological and molecular (genetic) data on artiodactyls instead suggest that entelodonts are cetancodontamorphs, more closely related to hippopotamuses and cetaceans through their resemblance to Pakicetus, than to basal pigs such as Kubanochoerus and other ungulates.

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