Half-a-billion-year-old new species reveals the origins of the octopus The IndependentPrimordial spiny slug from China was forerunner of world’s mollusks ReutersIs that a durian? No, it’s a weird ancient mollusc Nature.comResearchers uncover 500 million-year-old mollusk ancestor Phys.orgLove child of slug and hedgehog: fossils may shed light on early mollusc ancestors The Guardian