Offered are 7 high quality cave bear bones, found in a cave in Mixnigz, Austria (region of Graz), aged from the late pleistocene. Very well preserved! Offered: 1 humerus bone part 1 ulna bone 1 kneecap 1 claw of the cave bear, 4 bones, solid bones The cave bear (Ursus spelaeus) is a prehistoric species of bear that lived in Europe and Asia during the Pleistocene. Many caves in Central Europe had skeletons of cave bears inside. The average weight for males was 350 to 600 kg.