BBC News - Powys fossils 'shed new light' on ocean community evolution - 0 views
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Johnathan Fletcher on 19 Dec 11"They think they are of a kind never before discovered. The well-preserved organisms from the Ordovician period, which began about 495m years ago, lived in what is now the town of Llandrindod Wells, which was partially under water. Scientists believe they shed new light on how ocean communities have evolved."