Fossil In the cave bear (Ursus spelaeus), a relative of your brown bear and polar bear in the Pleistocene epoch in Europe The subfamily Ursinae knowledgeable a spectacular proliferation of taxa about 5.three–four.5 Mya, coincident with key environmental modifications; the 1st associates on the genus Ursus appeared close to this https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA