The priceless titanosaur fossil was discovered in 1985 during an expedition to Antarctica, but was tucked away for decades before being found recently. NEW YORK (AP) — Scientists have stumbled on a rare dinosaur fossil from Antarctica , tucked away for decades in a drawer. The bone comes from the tail of a long-necked, plant-eating dinosaur called a titanosaur . Scientists haven’t yet identified the species it belongs to. It was discovered in 1985 during an expedition to Antarctica’s James Ross