The extinct sea scorpion species Jaekelopterus rhenaniae had eyes comparable to those of today's horseshoe crabs. The two-and-a-half-meter predator was particularly apt at perceiving contrasts and ...

Asked to rank giant sea scorpions on a scale of one to terrifying, Russell Bicknell puts them at about an eight. "I suppose it depends how you define terrifying," Bicknell, a paleobiologist at the ...

The fossilised remains of a giant claw that once belonged to a sea scorpion roughly 2.5 metres long have been found in Germany. Researchers say the monstrous creature is the largest arthropod ever ...

The eyes of the extinct sea scorpion Jaekelopterus rhenaniae have the same structure as the eyes of modern horseshoe crabs (Limulidae). The compound eyes of the giant predator exhibited lens cylinders ...