Scientists Discover Fossils of Giant Marine Worms

Spanish researchers claim to have discovered evidence of a type of giant worm that lived 475 million years ago and was up to one metre in length. The fossilised tracks of the marine worms were found in the Cabaneros National Park in central Spain in an area that was a seabed during the Lower Ordovician period, the Spanish National Research Council (CSIC) said. It said the creatures lived in horizontal galleries of five metres in length and 15-20 centimetres in diameter under the seabed