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註冊 2006-7-14 來自 中國/香港
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[廣告]:
科學家還原3億年前"史前蜘蛛"的真實模樣 (圖文)
Computer technology brings 300million-year-old spider fossils back to life
Fossils of 300million-year-old spiders have been brought to life with computer technology.
Scientists used a CT scan to generate three dimensional images of two of the creatures, Cryptomartus hindi and Eophrynus prestivicii.Both were around the size of a 50p piece and they lived during the Carboniferous period, before the age of the dinosaurs.
Eophrynus的復原圖
A CT scan of Eophrynus, an ancient spider that lived 300 million years ago. Scientists used a computer technology to generate 3D images
The CT (computerised tomography) scanner, similar to devices used in hospitals, took about 3,000 X-ray photos of each fossil
“秘蛛”Cryptomartus
A reconstruction of Cryptomartus, which was found to have two forward-pointing front legs that may have been used to grab prey
英國倫敦帝國學院的古生物學家,利用3D成像掃描技術,成功復原了3億年前史前蜘蛛的真實面貌。不僅首次獲得了珍貴的模擬圖像,還對這種神秘的史前生物所處的環境進行了深刻的研究。
科學家還原了兩種史前蜘蛛的模樣,這兩種蜘蛛都屬於可以快速奔跑型的殺手。電腦模擬的圖像顯示,其中的一種名叫“秘蛛”(Cryptomartus)的史前蜘蛛,體型較小,但是可以和周邊的環境相適應,它利用周圍的樹木花草作掩護進行捕食。另外一種名叫Eophrynus,是一種泥盆紀古生物,不僅可以在陸地表面進行快速額的奔跑,而且還可以在森林的落葉上進行奔跑。科學家稱,這兩種史前蜘蛛對環境的適應性令人驚訝。
科學家們通過對比獲得的模擬圖片進一步的發現,史前秘蛛的生活習性類似于現代的蟹蛛,是一種典型的“潛伏殺手”,通常是通過隱藏和潛伏來獵取食物。秘蛛的腿上還有一些微小的附足,這種進化便於它們在潛伏時快速移動。Eophrynus也是一種“潛伏殺手”,但是它擁有特殊的長腿,這種結構使它可以適應幾乎當時地球上的所有環境。
目前,科學家正計劃通過獲得的電腦模擬圖像,對這兩種蜘蛛的生存環境進行模擬。(海瀾)
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