Dr Ryan McKellar, Curator of Invertebrate Palaeontology at the Royal Saskatchewan Museum in Canada, said: 'The new material preserves a tail consisting of eight vertebrae from a juvenile.
They're the most intelligent invertebrate in the world, can detach their arms, spray ink, move in perfect cadence with underwater currents, squeeze through any space larger than a quarter, and change color to blend in with their surroundings.
