"Imagine trying to reconstruct the history of life with that information," Rougier said.
“想想吧，要用这么点信息来构建生命史，”鲁吉尔说。
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"Getting on your hands and knees, or going flat on the ground and crawling your way across, is how you find small-mammal fossils, " Rougier said. "It is not very glamorous.