Abstract
Previous workers in North Devon have, in general, considered that there are numerous limestone bands developed within the Ilfracombe Beds. The present paper demonstrates that there are only two main limestones, each about thirty feet thick, which, though similar in lithology, have a markedly different coral fauna. These limestones are separated by about 250 feet of slate in which occurs a further limestone only three to four feet thick with a distinctive lithology. The fauna so far obtained from these limestones suggests an upper Givetian or Frasnian age for the succession; the coral fauna from the thin intermediate limestone is not recorded elsewhere in the British Isles, but it is comparable with a fauna from the Hlubocěpy Limestone (Middle Devonian) of Bohemia. The total thickness of the beds in which the limestones occur is only about 350 feet.
Published Version
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