Fossil On the cave bear (Ursus spelaeus), a relative from the brown bear and polar bear from the Pleistocene epoch in Europe The subfamily Ursinae expert a dramatic proliferation of taxa about 5.three–4.five Mya, coincident with important environmental adjustments; the 1st customers on the genus Ursus appeared close to this https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA