Physical appearance and biologyEdit
Megalograptus belonged to a group of marine arthropods called eurypterids. These animals were marine scorpions which lacked the stinger on the tip of their tail and were replaced with a fluke. Megalograptus was one of the smaller eurypterids but it is was nonetheless just as ferocious.
Behaviour and traitsEdit
When attacking other animals, Megalograptus used its sharp pincers to shear and tear apart its victims. Using its mandibles, it would force the meat into its mouth. It mainly hunted arthropods such as trilobites, early fish and even other sea scorpions.
One feature of Megalograptus and other sea scorpions that made them unique was that they were the first animal to walk onto land. Although they typically ventured onto land to feed on any the sea threw up, groups of Megalograptus would come onto the shore to reproduce en masse.
On his journey to the Ordovician, Nigel Marven caught a fish to tempt a Megalograptus to approach him. Once one approached him, he grabbed it and lifted it out of the water. Nigel then released it and allowed it to feed on the fish. However, once it finished off its meal, it moved onto Nigel and attacked him. Nigel escaped with only a cut.
Later, whilst Nigel was using a trilobite fitted with a camera to record a Cameroceras, a Megalograptus approached the camera and fed on the trilobite. Fortunately for Nigel, he repelled it by knocking it off. Later, on a dive, Nigel saw several Megalograptus gathering and moving to shallow waters. Some were eaten by a Cameroceras.
When Nigel returned to land after the dive, the shore was teeming with Megalograptus which was reproducing in a colony. When Nigel left his boat, the scorpions began reproducing on the boat before being thrown off by Nigel.