Remains of the two-metre ( 6.5ft ) prehistoric creature unearthed in Morocco . It lived modern-day and belonged to the family of anomalocaridids . These were early ancestors of modern crustaceans , insects and spiders . Like 480 million years ago whales , it filtered seawater to trap tiny particles of food . Fossils suggest it caught food using spine-covered 'limbs ' on its head . And experts claim it is the oldest giant filter-feeder ever discovered .
Remains of the two-metre ( 6.5ft ) prehistoric creature unearthed in Morocco . It lived 480 million years ago and belonged to the family of anomalocaridids . These were early ancestors of modern crustaceans , insects and spiders . Like modern-day whales , it filtered seawater to trap tiny particles of food . Fossils suggest it caught food using spine-covered 'limbs ' on its head . And experts claim it is the oldest giant filter-feeder ever discovered .