IV.—On the Subdivisions of the Carboniferous Series in Great Britain, and the True Position of the Beds Mapped as the Yoredale Series

Extract

The earlier part of this paper is devoted to a short epitome of the stratigraphical evidence that the Yoredale rocks of Wensleydale are only the equivalents of the upper part of the Carboniferous Limestone, and that the so-called Yoredale Beds of South Yorkshire, Lancashire, and Derbyshire are an entirely different series, which occupy a position above the Carboniferous Limestone. After all, the important point is the palæontological evidence, which, to my mind, is absolutely conclusive.