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(官網與圖上的年份不同,看內文應該是圖上的年份為正確)

 

TYRANNOSAURUS REX  ~100 million years

Tyrannosaurus (meaning 'tyrant lizard') was a genus of theropod dinosaur. The species Tyrannosaurus rex ('rex' meaning 'king' in Latin), commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the last three million years of the Cretaceous Period, approximately 68 to 65 million years ago. It was among the last non-avian dinosaurs to exist prior to the Cretaceous–Tertiary extinction event.

Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it was the largest known tyrannosaurid and one of the largest known land predators, measuring up to 13 metres (43 ft) in length, up to 4 metres (13 ft) tall at the hips, and up to 6.8 metric tons (7.5 short tons) in weight. By far the largest carnivore in its environment, Tyrannosaurus rex may have been an apex predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger. The debate over Tyrannosaurus as apex predator or scavenger is among the longest running debates in paleontology. (click to see all the article on Wikipedia) 

雷克斯暴龍 ~1億年前

暴龍(意為暴君蜥蜴”)是獸腳類恐龍的一屬。雷克斯暴龍(“rex”在拉丁文中意為國王”)這物種,在流行文化中被縮寫成T. rex。牠的生活範圍遍及了現今的北美洲西部,較於其它暴龍其生活領域更加廣闊。化石在白堊紀最後三百萬年間,約68百萬到65百萬年前,在不同的岩層中陸續被發現。牠是存在於白堊紀-第三紀滅絕事件中,最後的非禽類恐龍之一。

就像其他暴龍科成員,暴龍是一種雙足肉食動物,有個龐大的頭骨,以及平衡頭骨用的一條長而重的尾巴。相較於龐大而有力的後肢,暴龍的前肢非常小,但有著其尺寸不相稱的勁道,其之上還有兩個爪指。雖然有其他獸腳類恐龍相近或超過暴龍的大小,但牠是已知暴龍科中最大的成員,以及已知最大的陸地肉食動物,量測起來高達13(43英呎),其臀部位於4(13英呎)高的位置,以及多達 6.8(750短噸)(英噸)的重量。身為其生活環境中最大的食肉動物,雷克斯暴龍可能處於掠食者的頂端,補食鴨嘴龍科或角龍下目(ex.三角龍)的恐龍,但也有一些專家認為暴龍是腐食者。其為掠食者或腐食者的爭論,是中古生物相關討論中,時間最長的。 

(維基連結:暴龍)

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