Tracks found in Scotland look to be from an ancient water scorpion as big as a kitchen table.
From the foxnews.com
Measuring up to 2 metres long, the eurypterid water scorpion is the largest arthropod that ever lived.
From the newscientist.com
They are predatory water bugs belonging to the insect order the Hemiptera which includes the water scorpion and back-swimmer.
From the thisisbristol.co.uk
Near Kalbarri on the Murchison River the footprints of a giant water scorpion were found on land, the first animal to walk on the Australian continent.
From the en.wikipedia.org
Credulous Afghans marvelled at this obviously rich Saudi who chose life in scorpion-infested caves, where his diet was a simple vegetable stew and water.