The Quarterly journal of the Geological Society of London . ^^ 656 DR. G. J. HINDE AND ME. HOWARD FOX ON [Nov. 1895, IX. Position of the Badiolarian (Codden Hill) Beds inthe Lower Culm Series. It has been already mentioned that De la Beche states verydistinctly that in North Devon there is no evidence of uncon-formity between the Devonian and Carboniferous or Culm Measures,but that there is a gradual passage from the shales and slates ofthe Upper Devonian rocks into black carbonaceous shales and lime-stones with an abundance of Posidonomyce. These black bedshave been generally regarded as the
The Quarterly journal of the Geological Society of London . ^^ 656 DR. G. J. HINDE AND ME. HOWARD FOX ON [Nov. 1895, IX. Position of the Badiolarian (Codden Hill) Beds inthe Lower Culm Series. It has been already mentioned that De la Beche states verydistinctly that in North Devon there is no evidence of uncon-formity between the Devonian and Carboniferous or Culm Measures,but that there is a gradual passage from the shales and slates ofthe Upper Devonian rocks into black carbonaceous shales and lime-stones with an abundance of Posidonomyce. These black bedshave been generally regarded as the lowest fossiliferous beds ofthe Culm Measures, both in North and South Devon and inCornwall. They contain but few species of fossils; as shown inthe List given above, there appear at present to be but 7 speciesknown in them, namely 3 species of Posidonomya, includingP. Becheri, Goniatites sphcericus, Mart., G. crenistria, Phill., G. stria-tus, Sow., and Orthoceras cylindraceum, and none of these forms hasas yet been met with in the Badiolarian (Codden Hil
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
