﻿1861.] 



KIRKBY PERMIAN, SOUTH YORKSHIRE. 



287 



2. On the Permian Rocks of South Yorkshire ; and on their 

 Pal^eontological Relations. By James W. Kirkhy, Esq. 

 (Communicated by Thomas Davidson, Esq., F.R.S., F.Gr.S.) 

 [Plate VII.] 

 Contents. 



§ I. Introduction. 



§ II. Permian District in South Yorkshire. 



Sections near Doncaster. 



1 . Bunter Schiefer. 3. Small-grained Dolomite. 



2. Upper Limestone or Bro- 4. Lower Limestone. 



therton Beds and Lower 5. Rothliegendes or Lower Red Sand- 

 Red Marl. stone. 

 § III. Comparison of the Permian Strata of South Yorkshire with those of 

 Durham. 



§ IV. Remarks on the Permian Fossils of Yorkshire. 



1. Cephalopoda. 5. Polyzoa. 



2. Gasteropoda. 6. Entomostraca. 



3. Conchifera. 7. Foraminifera. 



4. Brachiopoda. 8. Alg£e. 

 § V. Distribution of the Fossils. 



A. Fossils of the Lower Limestone. 



1. Fossils at Moorhouse. J 3. Fossils near Broadsworth. 



2. Fossils at Hampole. | 4. Fossils near Pickburn. 



B. Fossils of the Brotherton Beds. 



§ VI. Permian Fossils of South Yorkshire compared with those of Dui'ham. ■ 

 § VII. Permian Fossils of South Yorkshire compared with those of Lancashire. 

 § VIII. Permian Fossils of Ireland. 

 § IX. The Zechstein. 

 § X. Distribution of the Permian Fauna in Time. 



§ I. Introduction. — In the present communication I propose to 

 speak of the geology and palaeontology of the Permian strata that lie 

 between the towns of Pontefract and Knottingley, on the one hand, 

 and Tickhill and the village of Maltby, on the other. In doing so 

 my chief objects are, first, to endeavour to determine the equivalency 

 of the subdivisional groups of these strata with those of the adjoin- 

 ing county of Durham ; and second, to throw some additional light, 

 if possible, upon the distribution of Permian species south of the 

 Durham area. Towards the accomplishment of these objects I have 

 made two visits to the district in question — one in 1854, and the other 

 during the summer of 1859. 



Prof. Sedgwick has already described the geology of this region in 

 his admirable memoir " On the Geological Relations and Internal 

 Structure of the Magnesian Limestone*." Prof. Phillips has also 

 noticed some of its features in a short paper " On the Geology of 

 Ferry Bridge and its Vicinity," published about the same period as 

 the precedingf. And since the publication of these papers, Mr. H. 

 Clifton Sorby and Mr. Edward W. Binney appear to have pursued 

 investigations in the same district, though the results have not been 

 published %. Sir Roderick Murchison bas also alluded to certain points 

 of its geology in the last edition of ' Siluria§.' 



* Trans. Greol. Soc, 2nd ser. vol. iii. pp. 37-124. 

 t Philosophical Magazine, vol. iv. 1828. 



\ See Prof. King's remarks on Mytilus squamosus, Bakevcllia antiqua, and 

 Dentalium Sorbyi, Mon. Perm. Foss. pp. 1G0, 170, 218. 



§ Siluria (1859), pp. 348, 349. 

 VOL. XVII. PART I. X 



