Abstract: While visiting the American Museum of Natural History (AMNH) in May and June, 2001, invited by Dr. R. H. Tedford, the authors were able to make a survey of the fossils collected by the 3rd Central Asiatic Expedition during the 1920s. Among them some undescribed specimens of Entelodontidae were recovered. They were labelled as found from late Eocene deposits of Nei Mengol in 1928. Eocene entelodontids were poorly known in Asia. These specimens are important not only because they represent a new taxon, but also they cast new light on the affinity between Asian and North American entelodonts.