By Sid Perkins
Scientists don’t know if many birds 110 million years ago looked like a duck, walked like a duck, or quacked like a duck, but they’re now sure of one thing—some had webbed feet.
Researchers discovered the fossil tracks of an otherwise unknown bird in sediments near Jinju, South Korea. The scientists, who described their find in the June 21 online issue of Naturwissenschaften, say the imprints push back evidence of web-footed birds by at least 25 million years.