Euceratherium, also called the shrubox, is an extinct genus of ovibovine caprine known from the Pleistocene of North America and China. Two species have been proposed: the type species Euceratherium collinum named in 1904, and a second species Euceratherium bizzelli, named in 1937. Some researchers have expressed that the differences between these species may actually be individual variation, or variation within a single species.