Double Eurypterus remipes (Sea Scorpion) ec824443c95d0e87cc3e574f9cdc918c Current scientific opinion is that

Current scientific opinion is that all of the material came from the same impact

which are magnified 10x to grade their clarity

living in central / northern Europe

5 - 7 on the mohs scale

Double Eurypterus remipes (Sea Scorpion) ec824443c95d0e87cc3e574f9cdc918c Current scientific opinion is thatEurypterids, commonly known as Sea Scorpions, are an extinct group of arthropods that are related to arachnids and include the largest known arthropods to have ever lived. Prevalent during the Silurain and Devonian ages, eurypterids were segmented aquatic arthropods, with compound eyes, and two club like claws. Some species exhibit toothed claws, and may therefore have been predators. Though they are globally dispersed, eurypterid fossils are uncommon