832 APPENDIX. 



C. turgida and A. modiolaris are Here the most common forms. 

 The shells occur in black shales and have the periostracum preserved. 



Fifty yards above the Deep Soft Coal. — An exposure at Messrs. 

 Oakes and Co. 's clay pit at Pyehill contains numerous shells, chiefly 

 in the ironstone nodules from certain grey shales. The following were 

 obtained : — 



MOLLUSC A. 



Carbonicola aquilina (Sow.). 



„ turgida (?) (Brown). 



„ nucularis (Hind.). 



Naiadites modiolaris (Sow.). 

 Anthracomya modiolaris (Sow.). 



The fossils are all in the condition of internal casts in ironstone; 

 C. aquilina and A. modiolaris being the only common species. 



Deep Soft Coal. — At Cinderhill Colliery the black shale roof of this 

 coal contains crushed shells, including: — 



MOLLUSC A. 



Carbonicola aquilina (Sow.). 



,, subconstricta (Sow.). 



as well as fish remains, including: — 



FISH. 



Rhizodopsis sauroides (Willm.). 

 Coelacanlhus elegans (Newb.). 

 Megalichlhys Hibberti (Agass.). 



Deep Hard Coal. — At the Kadford Colliery a heavy, black fissile 

 shale, said to form the floor of the seam, is rich in fish, as the following 

 list shows : — 



Acantlwdes Wardi (Egerfc), tin spines. 



Megalkhthys Hibberti (Agass.), teeth, scales. 



Platysomus parvulus (Young), scales 



Rhizodopsis sauroides (Willm.), scales, vertebrae. 



Coelacanthus elegans (Newb.), scales. 



Rhadinichthys Wardi (?) (Ward), scales. 



Cheirodm granulosus (Young), palatal dentigerous bone. 



Elonichthys Egertoni (Egert.), scales. 



Deep Soft and Deep Hard Coal. — In both these seams, at the part- 

 ing between the coal and the roof, and more rarely in the seam itself, 

 large fish remains, especially ichthyodorulites, are sometimes found. 



This horizon was discovered by Mr. T. G. Lees, manager of New- 

 stead Colliery, in the workings of the Clifton Colliery. His collection 

 includes the following species : — 



Gyracanthus formosus (Agass.), spines. 



Ctenacanthus, sp., spines. 



Sirepsodus sauroides (Binney), tooth. 



Megalkhthys Hibberti (Agass.), teeth, scales, vertebrae. 



This horizon also occurs at the Eadford Colliery, where the same 

 species have been obtained. In each case the remains are very much 

 larger in size than those from any other fish-bed in this district. 



