Fossil With the cave bear (Ursus spelaeus), a relative from the brown bear and polar bear with the Pleistocene epoch in Europe The subfamily Ursinae seasoned a remarkable proliferation of taxa about five.three–four.five Mya, coincident with main environmental adjustments; the main members of your genus Ursus appeared all over this https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA