Leicester University scientists have identified the paired fins of Euphanerops, a fossil jawless fish that lived some 370 million years ago. Euphanerops, a fossil jawless fish that lived some 370 million years ago (Robert S. Sansom et al / Biology Letters) The find makes the fish one of the first vertebrate to develop paired appendages such as fins, legs or arms. However, their positioning is incredibly unusual. “Euphanerops is unique because its...