In the technical shop at the Museum of Natural History in Halifax, a stone column is being prepared for shipping. But this is no ordinary column. It’s a fossilized tree stump. The stump is from a tree from 300 million years ago. It was part of a tropical forest south of the equator at the heart of the supercontinent Pangea. …Over millions of years, the tree moved thousands of kilometres, as Nova Scotia drifted northward. The fossil was discovered in the cliffs at Joggins. Now, it’s about to be moved again, to join other fossils from across Canada in a new “Dawn of Life” gallery at the Royal Ontario Museum. …For more than a hundred years, these Lepidodendron trees have been helping people understand the Carboniferous period. Now, Fedak said this fossil will spread that knowledge to more than a million visitors to the ROM a year.