NORTH STAFFORDSHIRE COAL FOSSILS. 207 



dale shales. G. micronatus (Phil.) : in brook course, 

 The Combes, Felt House. G. paucilobus : roof of 

 Bay coal, Longton. G. intemidius : Yoredale shale, 

 Cellarhead. 



Nautilus falcatus (Sow.) : roof of Bay coal, Longton. N. 

 subsulcatus (Sow.) : The Combes, near Leek. 



Orthoceras cintum (Sow.) : The Combes, near Leek. 

 Orthoceras : roof of Bay coal, Gin mine ; Lower 

 coal measures. 



Discites falcatus : roof of Bay coal and Gin mine. 



Annelida. Of this group only two genera have been 

 found, viz., Spirorbis and Serpula. All the recent species 

 of Spirorbis are marine in their habitat. It is a curious 

 fact that the extinct species are only found in beds of 

 freshwater origin. At a short distance above the Bassy 

 mine ironstone there is a bed of so-called freshwater lime- 

 stone, known as the " Spirorbis limestone," in which it is 

 abundant. It also occurs in many of the coal shales in 

 the upper as well as the lower division of the coalfield. 

 We have frequently seen it attached to the stems and 

 leaves of fossil plants, especially ferns, beautiful examples 

 of which have been found at Scott Hay. 



ANNELIDA. 



I 



Spirorbis carbonarius (Murch.) : common : found adhering 

 to plants, Scott Hay ; band of freshwater limestone ; 

 Upper and Lower measures ; Cockshead ironstone ; 

 Hard mine coal shale, Adderley Green, &c. 



Serpula : rare : Lower Measures. 



