Sea scorpions, or eurypterids, were the largest arthropods the world has ever seen and could grow to 2.5 metres long. They had a pair of pincers, and in some species these too could become very large. Sea scorpions were predators that were in their heyday in the Silurian and Devonian, though they survived into the Permian. The name sea scorpion is something of a misnomer, as they also inhabited freshwater and may have ventured on to land now and then. They are related to scorpions, horseshoe crabs and spiders.
Scientific name: Eurypterida
The following habitats are found across the Sea scorpions distribution range. Find out more about these environments, what it takes to live there and what else inhabits them.
Discover what these behaviours are and how different plants and animals use them.
Additional data source: Animal Diversity Web
Discover the other animals and plants that lived during the following geological time periods.
Learn more about the other animals and plants that also form these fossils.