1946年，年轻的地质学家斯普里格被派往澳大利亚内陆评估一个荒废已久的矿场。一天他在山头不经意翻动了一块石头，惊讶地发现石头背面有一个奇特的“指纹”痕迹：这是一块指纹形状的化石。
如今，科学家在我国三峡地区也发现了这种化石。神秘“指纹”的“主人”到底是谁？
ink="%7B%22cover%22%3A%22%22%2C%22desc%22%3A%22%22%2C%22id%22%3A%22hcp4m7_39428%22%2C%22size%22%3A342.86%2C%22width%22%3A1080%2C%22height%22%3A1890%2C%22url%22%3A%22https%3A%2F%2Fm1-1253159997.image.myqcloud.com%2FimageDir%2Fc2358f5819d7cfe98fedb35d29869dd9.png%22%2C%22tags%22%3A%5B%5D%2C%22time%22%3A%22%22%2C%22mime%22%3A%22image%2Fpng%22%7D" alt="5.5亿年前，谁留下了这枚神秘“指纹”？"/>
记者21日从中国科学院南京地质古生物研究所获悉，中、美古生物学者最近在我国湖北省宜昌市发现一种约5.5亿年前的奇特动物化石：狄更逊虫化石。
这种远古动物的形态很像人类指纹，是寒武纪前动物的典型代表，此次是科研人员首次在中国发现确定的狄更逊虫化石。
ink="%7B%22cover%22%3A%22%22%2C%22desc%22%3A%22%22%2C%22id%22%3A%22il8jdz_187426%22%2C%22size%22%3A130.83%2C%22width%22%3A1080%2C%22height%22%3A721%2C%22url%22%3A%22https%3A%2F%2Fm1-1253159997.image.myqcloud.com%2FimageDir%2F33f27e3e2d957da549e0b84af401d11b.png%22%2C%22tags%22%3A%5B%5D%2C%22time%22%3A%22%22%2C%22mime%22%3A%22image%2Fpng%22%7D" alt="5.5亿年前，谁留下了这枚神秘“指纹”？"/>
澳大利亚弗林德斯山脉产出的狄更逊虫化石。中国科学院南京地质古生物研究所王霄鹏摄