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Toy_Guy_in_MO t1_iyeqnzq wrote

Reply to comment by C9177 in TIL about Eurypterids, or "sea scorpions", the largest known arthropods ever to have lived. The largest, Jaekelopterus, reached 2.5 meters (8.2 ft) in length. Many forms lived in brackish or fresh water, and their dual respiratory system allowed for short periods of time on land. by WouldbeWanderer

It's actually part of what led to our land-dwelling ancestors. Being on land was much safer.

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