Recent Study’s show a development in Sea Scorpions anatomy. They’ve found that some species of Scorpions had a thin blade on its tail, with a surprising amount of flexibility. They are coming to the conclusion that some Sea Scorpions may have had a blade for hunting or defense.

Ancient sea scorpions were hacks.
Some of the marine creatures had a thin, serrated spine on the tip of their tail — and that tail was surprisingly flexible, based on a 430-million-year-old fossil found in Scotland. Slimonia acuminata may have had the range of motion to strike large predators and prey, researchers report online April 18 in American Naturalist.
Scientists had thought that the ancient animals largely used their tails for swimming, primarily flapping them up and down like today’s lobsters and shrimp do…
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