Who is Jason Downs as noted in the nonfiction book, Your Inner Fish?

Jason Downs was the graduate student on the Arctic Circle expedition that Shubin led when the “missing link” was discovered. Shubin had been eager for the expedition anticipating that they would discover the link between the fish and the amphibian – the first creature to have physical features of both that enabled it to survive in both worlds. It was the end of the trip and Shubin was ready to call it quits, disappointed that he hadn’t achieved his goal when Jason Downs rushed in. He had found rocks apparently rich in fossils. The team eagerly investigated and ultimately found the “in-between” creature that Shubin had hoped to find.