106 



MR. R. L. SHERLOCK ON THE RELATIONSHIP OF THE [Feb. 1 9 1 1 . 



The stratigraphical evidence already adduced points to the Upper 

 Magnesian Limestone being contemporaneous with part of the 

 Bunter. It will be useful now to give some account of the 

 palaeontology of the Upper Magnesian Limestone. 



The most important work on British Permian Palaeontology is 

 King's 'Monograph of the Permian JFossils of England'* (1860), 

 which gives a complete account of all that was known of the 

 subject at the date of publication, and is still a standard work. 

 J. W. Kirkby (1861) described the fauna of the South Yorkshire 

 Permian, and gave a list of the species known at that time from the 

 Upper and Lower Limestones ; and a few additional species are 

 mentioned in the Survey Memoirs. A full list of the species in 

 the Lancashire Permian is given by Geinitz, 1 with an addition by 

 Mr. lloeder. 2 



Combining the lists from these (apparently the only) sources, we 

 find that the fauna and flora of the Upper Magnesian Limestone 

 comprise : — 



Lamellibranciiiata (cont.). 



Mytilus septifer King. 



Mytilus squamosals J. de C. Sow. 



Myalina hausmanni Goldf. 



Bakevcilia antiqua Minister.* 



Leda vinti King. 



Leda speluncaria Geinitz. 



Tleurophorus costatus Brown. 



Schizodus schlotheimi Geinitz. 



Schizodus rotundatus Brown. 



Schizodus truncatus King. 



Schizodus obscurus (J. Sow.). 



(?) Edmondia elongata Howse. 



Clcidophorus pallasi (de Vera.). 



SCArilOPODA. 



Dentalium speyeri Geinitz. 



PoLYPLACOPHOKA. 



Chiton (?) . 



Gastropoda. 



Turbo helicinus Schlotheim. 

 Turbo mancuniensis Brown. 

 Turbo permianus King. 

 Bissoa obtusa Brown. 

 Rissoa leighi Brown. 

 Eissoa gibsoni Brown. 

 Natica minima Brown. 



Pisces. 

 Gyroprisiis obliquus Agassiz .* 

 Talceoniscus longissimus Agassiz.* 

 Palceoniscus catopterus Agassiz.* 



Plants. 

 Alg^e. 

 Spongillopsis dyadica Geinitz. 

 Chondrus (?) binneyi King. 



CoNlFER/E. 



Voltzia liebeana Geinitz. 



Palm.e. 



Guilielmiles permianus Geinitz. 



a n i m a l i a. 

 Rhizopoda. 

 Dentalina permiana Jones. 

 Dentalina kingii Jones. 

 Dentalina (?). 

 Textidaria triticum Jones. 

 Textidaria cuneiformis Jones. 



SpONGIjE. 



Tragos binneyi King. 



Vermes. 

 Spirorbis permianus King. 

 Vermilia obscura Kino-. 

 Serpula (?)pusilla Geinitz. 

 Filograna permiana King. 



Lamellibranciiiata. 

 Avicula (Monotis) Jcazanensis de 



Vern. 

 Avicula (Monotis) garforthensis 



King.* 



The species marked with an asterisk * are described by King 



H. B. Geinitz, 1890, pp. 551-52. 



C. Boeder, 1892, p. 113. 



