簡介:"劍齒象,顧名思義,就是它的門齒像一把利刃。門齒的外型和猛獁象有點相似,但並不像猛獁象那樣的彎曲纏繞狀,而是彎曲很小,近乎平行。 劍齒象的化石分布於亞洲和非洲,但主要還是在亞洲,特別是華北及華南地區如甘肅、山西等地,都有不少的標本被挖掘出。在台灣本島、鄰近的日本、印尼等地,亦有發現劍齒象的化石。根據古生物學家推測,在冰河時期,因為氣候的變化,這些大象逐漸的遷徙至較暖的南方。而且那時因大量的海水被海風等作用帶至陸地,形成冰川,以致全球海平面下降,形成陸橋。因此使它們的足跡可以到達這些分離的島嶼上,並發展出不同的亞種。化石脊椎長鼻目劍齒象Stegodon sp., judging from its name, had the cutting edged incisors. The appearance of incisors looked much like Mammuthus , but with small curve not big one. Fossil Stegodon sp. distributed in Asia and Africa, but mainly in Asia, in particular in the areas of Gansu and Shanxi Provinces of North and South China where many fossils were unearthed. On the main island of Taiwan, the neighboring countries such as Japan and Indonesia had report of fossil discovery of Stegodon sp. Paleontologist believed that at Ice Age, due to the climate change, Stegodon sp. migrated to the warmer South and it was also because the sea water was brought to the land by wind and formed ice river. Lower sea level worldwide helped the formation of land path and thus, Stegodon sp. was able to traverse to separate islands and develop its subspecies."