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News
520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods
1+ hour, 42+ min ago (431+ words) Paleontologists have identified the earliest-known cephalopod equipped with a siphuncle — a tubular extension of the mantle found in shelled cephalopods — pushing back the fossil record of this key evolutionary feature to the Early Cambrian, roughly 520 million years ago. Life reconstruction…...