@WFS,World Fossil Society, Athira, Riffin T Sajeev, Russel T Sajeev A half-a-billion-year-old spiny slug has shed light on the origins of animals like oysters and octopuses, researchers have said. Scientists, including experts from the University of Oxford, have discovered a new species of mollusc that lived 500 million years ago. The fossil, called Shishania aculeata, […]