short size of the snout. The dentition is I3(?)-C1-P4-M3, indicating in the upper jaw the number of incisors, canines, premolars, and molars respectively. Colbert compared B. wyomingensis to Helohyus, Chaeropotamus, Achaenodon, and Parahyus based on tooth shape. No mandibles were preserved with the holotype specimen and therefore dentition of the lower jaws could not be determined. The overall width of the skull is broad and having widely separated parietal crests. In addition, the zygomatic arches are deepened and expanded below and behind the eye socket, contributing to the wide skull shape, which is very similar to other entelodonts. The rear portion of eye socket is closed and situated directly above the last two molars. Articulation surfaces for the lower jaws; the glenoids, are broad, shallow, and situated around the occlusal line of the upper cheek teeth. Both paroccipital processes are short and parietals are weakly developed. The basicranium, or occiput, is considered basal. Classification and Evolution Brachyhyops is an artiodactyl which has a poorly resolved evolutionary status that continues to be subject of revision. Colbert initially classified Brachyhyops strictly within the bunodontids based on its bunodont-like tooth shape. More recent studies revised the evolutionary relationship of Brachyhyops and it has now been recognized as a very basal entelodontid that might represent the origin of the clade Entelodontidae, which also includes members such as the Oligocene Archaeotherium and Miocene Daeodon. Taxonomy Brachyhyops was named by Colbert (1937) [also said to be 1938]. The type species is B. wyomingensis. It was assigned to Artiodactyla by Colbert (1937); assigned to Suina by Effinger (1998), and was assigned to Entelodontidae by Carroll (1988). Merger with Eoentelodon Eoentelodon was synonymized subjectively with Brachyhyops by Lucas and Emry (2004) as "Brachyhyops yunnanensis." However, in 2007, I. Vislobokova determined that Eoentelodon was not only distinct from Brachyhyops, but more closely related to Proentelodon, another primitive entelodont found in slightly older Middle Eocene strata of Mongolia, and placed Eoentelodon and Proentelodon in their own subfamily, Proentelodontinae. Fossil distribution Fossils have been uncovered from Texas to Uintah County, Utah to Saskatchewan, Canada as well as Jiangsu, China. Paleobiogeography Asian distribution The oldest fossil material that is assigned to Brachyhyops is early to upper Eocene in age, and recorded from six Asian localities, predominantly Mongolia, China, with the lone exception of a single location in Kazakhstan. Currently, two localities in southern Asia yield the oldest Brachyhyops material known. The first