簡介:" 卓越洞熊是在更新世時期極具代表性的一種熊類。在歐洲一些洞窟的更新世時期的堆積物裡,大量發現它的化石,而且同一堆積物中混雜不同的個體,顯現洞熊可能是群居的動物,而且長期以洞穴為棲息地,這也是之所以會稱之為洞熊的由來。不像現生的熊類只有在冬眠時,才會棲息在洞穴裡,而且大多獨來獨往。有部份的學者提出質疑,認為洞熊只有幼體和年老者才會棲居洞裡。 洞熊有著強壯的頷骨以及長的犬齒,臼齒為低齒冠,而且上面有鈍的小齒尖。這樣的牙齒構造比較適宜咀嚼植物,所以古生物學家認為洞熊可能也是植食性動物,並以牧草、嫩葉與果實等為食。但也曾經因在其遺骸附近發現其他小型動物的肢骨,因此部分的學者認為牠也可能也會捕捉這些小型動物。Cave bearIntroductionCave bear was a representative species of bear that lived during the Pleistocene period. Large quantities of its fossils were discovered in sediments from some Pleistocene caverns in Europe , and specimens from different individuals were found to exist within same layers of sediments, suggesting these bears may live in groups. This behavior of long-term cave dwelling is also the source of their given name, unlike modern bears which are mostly solitary animals, and only dwell in caves during hibernation. Some researchers have argued that only infants and aged cave bear populations exhibit cave-dwelling behaviors. Cave bears have strong jaw bones, long canine teeth and low molar crowns with small blunt tips. This structure is presumably suitable for chewing vegetations, and paleontologists have theorized that cave bears are herbivores, feeding on grass, leaves and fruits. However, since skeletal remains from smaller animals have also been found near the remains of these bears, some researchers have hypothesized that they may also prey on smaller animals as well. "