Fossil on the cave bear (Ursus spelaeus), a relative of the brown bear and polar bear from your Pleistocene epoch in Europe The subfamily Ursinae professional a extraordinary proliferation of taxa about five.3–four.5 Mya, coincident with important environmental modifications; the primary customers of the genus Ursus appeared all-around this time. https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA