冰原恐龙 DInosaurs on Ice免费观看完整版高清

There are dinosaur bones, lots of them, on Alaska's North Slope. But they're trapped in an icy tomb - a wall of permafrost. 　　To get to them an Australian scientist will experiment with extreme palaeontology. Dr Tom Rich from Museum Victoria became a leading authority on Polar Dinosaurs and unusual excavation techniques when he built a mine to get to fossils in the 1980s. Now he ...