Megalograptus welchi Phone Case

Megalograptus welchi was a member of a now extinct group of marine arthropods called Eurypterids, it lived during the Late Ordovician period around 449.5 to 443.8 million years ago. Compared to modern ocean dwelling arthropods, M. welchi was rather large, measuring around 1.2 meters in length, not including the large spiny appendages on the front of it's body; speaking of those spines, while it's pretty likely it used them to hunt for prey, science has yet to determine just how they were used or what type of prey it might have been hunting.