The stratigraphy and faunal succession in the Ordovician rocks of the Builth-Llandrindod inlier, Radnorshire

Abstract

This work is based largely on maps and collections of fossils made between the years 1904 and 1906 by Miss C. Chamberlain, M.Sc., of the University of Birmingham and Newnham College, Cambridge. Miss Chamberlain learned her geology at Cambridge, and then went home to Birmingham and carried on research in the subject under Professor Lapworth. She had hoped to present the results for her Ph.D. degree at Birmingham University, but unfortunately was obliged to leave Birmingham before the work was completed, and it has remained in its original state. A few years ago, when I was again taking up my work on the Ordovician faunas, I wrote to her and asked permission to study her collections. She replied, most generously placing all her maps and collections unreservedly at my disposal. When these came into my possession it was obvious that the collections contained some interesting and valuable material, and with the sanction of Professor Wills I decided to work it up. In the checking and revision of the maps I have had the help of Miss K. Prendergast, Ph.D. M.Sc., of the University of Western Australia and Newnham College, and my pupil Miss Nancy Kirk of Newnham College, who also revised and completed the mapping of the Llandegley Rocks area. These two have given me great help in the collecting of fossils from many localities, and we have been able to make considerable additions to Miss Chamberlain's lists. I have also, with the sanction of Professor Boulton, incorporated some hitherto