Scientific name: Brontoscorpio

Size: 1m(3.5ft), 10-15kg(20-35lbs)

Diet: Small marine creatures like Cephalaspis and Trilobites

Habitat: Shallow seas

Age: Silurian

Where it was found: Europe

Brontoscorpio was the largest scorpion ancestor ever lived during the Silurian period.

It had a large stinger about the size of a lightbulb and the stinger itself can deliver a powerful venom that paralyzed prey. Brontoscorpio also had 2 pairs of pincers with the larger pincers used for grasping prey and the smaller pincers used for tearing apart prey. Brontoscorpio hunted small marine animals like Cephalaspis and trilobites. Brontoscorpio adapted strong jaws for crushing and tearing apart the tough armored body of its prey.

Brontoscorpio was the ultimate scorpion and one of the apex predators of the Silurian Period: its name meant 'Thunder Scorpion'. Not only it could breath underwater it could come on land and absorb air it with its primitive lungs. They came on land to escape predators and molt its shell. At 3 feet long, it would take hours for a Brontoscorpio to molt its shell.

Brontoscorpio, despite its lethality, had predators like Pterygotus; an ambush predator as in Walking with Monsters where it had hunted smaller sea animals like Cephalaspis and Brontoscorpio itself.