Scientists say they've found a "missing link" in the early evolution of seals and walruses — the skeleton of a web-footed, otter-like creature that was evolving away from a life on land. Those feet and other anatomical features show an early step on the way to developing flippers and other adaptations for a life in the sea, the scientists said. One expert called it "a fantastic discovery" that fills a crucial gap in the fossil record....