204 NORTH STAFFORDSHIRE COAL FOSSILS. 



LAMELLIBRANCHIATA. MONOMYARIA. 



Aviculopecten papyraceus. (Goldf.) : roof of Bay coal and 

 Gin mine ; common in the Lower coal-measures ; 

 Churnet Valley ; Knypersley Reservoir. 



Axinus sp. : rare : roof of Gin mine coal. 



Ctenodonta gibbosa. (Flem. Geol. Yorksh., pi. 5, fig. 16) : 

 Combe's Valley. 



Posidonia Gibsoni (Brown) : not rare : Stinking coal shale, 

 Lower Measures. P. Molyneuxii (Salter) : Stinking 

 coal shale ; Churnet Valley. 



DIMYARIA. 



Anthracoptera quadrata (Sow.) : common : roof of Hard 

 mine coal, Adderley Green ; Knowles ironstone ; 

 Fenton. A. triangularis : rare : roof of Hard mine 

 coal, Adderley Green. A. Brownii (Salter) : common : 

 Ten-foot coal, Hanley. A. carinata : Knowles iron- 

 stone ; Fenton ; roof of Hard mine coal, Adderley 

 Green. 



Anthracosia robusta (Sow.) : not rare : Moss coal rock, 

 Longton ; New mine, Kidsgrove. A. acuta (Sow.) : 

 very common in the shale which overlies the Cocks- 

 head ironstone, Adderley Green. A. Aquilina (Sow.) : 

 common in the Cockshead ironstone, Adderley Green ; 

 " Mussel bed," Deep Pit, Hanley ; Hard mine coal, 

 Adderley Green. A. lateralis (Brown) : Deep Pit, 

 Hanley ; Hard mine, Adderley Green. A. ovalis 

 (Mart.) : common : Hard mine, Adderley Green ; 



