APPENDIX. 833 



At Radford Colliery the roof shales of these coals contain shells, 

 including the following : — 



Anthracomya modiolaris (Sow.). 

 Naiadites carinata (Sow.). 

 Carbonicola nucularis (Hind). 



Many of these shells, especially the specimens of C. nucularis, are 

 infested with numerous spirorbis. 



At the Waingroves Colliery, Cross Hills, near Heanor, certain iron- 

 stone nodules, probably from below the Deep Soft Coal, contained the 

 following shells : — 



Carbonicola acuta (Sow.). 

 ,, oralis (Martin). 



A fish-bearing cannel coal, probably from the Deep Soft seam, con-' 

 tained the following : — 



Rhizodopsis sauroides (Willm.). 

 Coelacanthus elegans (Newb.). 

 Mtgalichthys Hibberti (Agass.). 



Furnace Coal. — This seam is exposed in the floor of a brick pit 

 close to the canal, near Cossall Marsh, Ilkeston. From the black roof 

 shales of the coal, and from the overlying grey shales with ironstone 

 nodules, the following fossils were obtained: — ■ 



MOLLUSC A. 



Carbonicola acuta (Sow.). 



„ acuta, var. rhomboidalis (Hind). 



,, aquilina (Sow.). 



* turgida (Brown). 



„ nucularis (Hind). 



,, robusta (Sow.). 



Naiadites modiolaris (Sow.). 



Black Shale Coal. — At the Pinxton Colliery the black roof shales of 

 this seam contain fish remains, but it is characterised by a profusion of 

 shells, Carbonicola robusta being the most common. The assemblage 

 includes the following species of mollusca : — 



Carbonicola robusta (Sow.). 



„ nucularis (Hind) . 



,, aquilina (Sow.). 



,, turgida (Brown). 



Naiadites, sp. 



This horizon, which extends over a large area, is of special interest 

 on account of the large size to which the specimens of Naiadites attain. 

 All the fossils have the shell substances preserved, and, although 

 frequently crushed, the hinge area is often clearly seen. 



The same coal at the Pyehill Colliery yielded the following plants : — 



Alethopteris lonchitica (Schl.). 

 ,, valida (Bonlay). 



Lepidodendron Wortheni (Lesq.). 

 Trigonocarpus, sp. 

 Cordaianthvs Pitcairniae (L. and H.). 



