Oxyacodon was named by Osborn and Earle (1895). Its type is
Oxyacodon apiculatus. It was assigned to
Periptychidae by Osborn and Earle (1895) and Carroll (1988); and to
Conacodontinae by Archibald (1998), Eberle (2003) and Middleton and Dewar (2004). Fossils have been found dating back to the
Puercan stage in
New Mexico,
Colorado,
Utah,
Wyoming,
Montana,
North Dakota and
Saskatchewan. ==References==