The steppe bison or steppe wisent (Bison priscus) is an extinct bison found on steppes throughout Europe, Central Asia, Beringia, and North America during the Quaternary. It is believed that it evolved somewhere in South Asia which would have it appearing at roughly the same time and region as the aurochs with which its descendants are sometimes confused. The steppe wisent was over two metres tall and resembled the modern bison species, reaching 900 kg (1984 lbs) in weight. The tips of the horns were a metre apart, the horns themselves being over half a metre long.