From the BBC…
“The immense fossilised claw of a 2.5m-long (8ft) sea scorpion has been described by European researchers.
The 390-million-year-old specimen was found in a Germany quarry, the journal Biology Letters reports.
The creature, which has been named Jaekelopterus rhenaniae, would have paddled in a river or swamp.
The size of the beast suggests that spiders, insects, crabs and similar creatures were much larger in the past than previously thought, the team says.”