What prompted Shubin to pack his gear and head to the Canadian Arctic as noted in the nonfiction book, Your Inner Fish?

Ashton Embry was the leader of the teams of Canadian geologists and paleobotanists on expeditions to the Canadian Arctic. He described the geology of the Devonian Age rocks in Canadian rocks. Shubin was intrigued when he read about Embry’s findings; he found great similarities in the description of the Canadian rocks and the rocks that Shubin had been digging into in Pennsylvania. At was the impetus for Shubin to pack his gear and head to the Canadian Arctic.