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The Lemur That Was a Fish | Wired Science | Wired.com
Fossils are not always what they seem. Megarachne , once heralded as the largest spider of all time, was actually a sea scorpion. The squishy Cambrian critter Nectocaris has been transformed from one of our early chordate cousins to an enigmatic invertebrate of unknown affinity. Tracks thought to be…