↑ I. A. Vislobokova(12 November 2008).“The oldest representative of Entelodontoidea (Artiodactyla, Suiformes) from the Middle Eocene of Khaichin Ula II, Mongolia, and some evolutionary features of this superfamily”.Paleontologicheskii Zhurnal (Paleontological Journal)42(6): 643–654.doi:10.1134/S0031030108060105.