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  • Ludlow Group (category Ludlow epoch)
    and where the underlying Wenlock limestones are absent the shales of the Ludlow group graduate, downwards into the Wenlock shales. In Wales the group...
    6 KB (745 words) - 18:42, 12 October 2022
  • Thumbnail for Ancient Olympic Games
    Olympiads to count years, although credit for codifying this particular epoch usually falls to Hippias of Elis, to Eratosthenes, or even to Timaeus, whom...
    65 KB (7,220 words) - 22:56, 15 April 2024