Andrewsarchus
| Andrewsarchus Temporal range: Eocene
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| The only skull of Andrewsarchus, on display at the American Museum of Natural History in New York City. | |
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| Genus: | †Andrewsarchus Pao, 1923
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Andrewsarchus mongoliensis (Andrews + Greek ἀρχός, "ruler"), was a predatory artiodactyl, closely related to entelodonts, hippos,whales and Mesonychids
Andrewsarchus lived during the Eocene, about 45 to 36 million years ago. Because Andrewsarchus is only known from a skull and a few other bones, the animal's full appearance is unknown, but based on what is known of it and its relatives, it was most likely a stocky hoofed entelodont-like animal. It had a long snout with large, sharp teeth and flat cheek teeth that may have been used to crush bones. Because Andrewsarchus is only known from a skull and a few other bones, whether it was an active predator or merely a large scavenger is open to debate, as is its exact time range.
