Fossil Of the cave bear (Ursus spelaeus), a relative in the brown bear and polar bear with the Pleistocene epoch in Europe The subfamily Ursinae skilled a spectacular proliferation of taxa about 5.three–4.5 Mya, coincident with big environmental variations; the very first members in the genus Ursus appeared around this https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA