A track from a three-toed dinosaur believed to be about 70 million years old has been discovered in Denali National Park, the first evidence that the animals roamed there, scientists said.
A track from a three-toed dinosaur believed to be about 70 million years old has been discovered in Denali National Park, the first evidence that the animals roamed there, scientists said.
美国科学家日前表示，一块被认为是7000万年前的恐龙脚印化石在阿拉斯加州的德纳里峰国家森林公园现身。这表明该地区曾经生活着恐龙。