Friday, November 09, 2007

500 Million Years Ago, Jellyfish Left Their Mark in Fine Sea Sediments - New York Times


500 Million Years Ago, Jellyfish Left Their Mark in Fine Sea Sediments - New York Times: "Which makes the discovery in Utah of four types of well-preserved fossil jellyfish from the Middle Cambrian period, half a billion years ago, all the more remarkable."

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