﻿500 ME. J. T. STOBES ON THE MAEINE BEDS [Aug. I90 5 



times, it escaped recognition until 1901, when it was found in situ 

 by Mr. E. P. Turner and myself in the roof of the Lady Coal, at Chell 

 Colliery (7 in PI. XXXIV) — the distance between the two collieries 

 being about 6 miles. The Lady Coal occurs about 48 feet above 

 the Knowles or Winghay Coal, which is a well-known seam in North 

 Staffordshire. This marine horizon, then, proves the identity of the 

 coal which receives two names in different localities. 



The exact position of the bed at Chell Colliery is recorded in 

 the following section : — 



Thickness in feet inches. 



Light-grey shale, with marine fossils 2 



Black fissile shale 1 3 



Lady Coal 2 4 



Underclay, with Stigmaria. 



The following fossils have been obtained at these two localities 

 some of them in a beautiful state of preservation : — 



[v.a. = very abundant ; c. = common.] 



Foley 



Colliery. 



No. 17 



(PL XXXIV). 



Chell 

 Colliery. 



No. 7 

 (PI. XXXIV). 



i 



Ctenodonta sp. 



* 



* 

 ed by J. W. 



v.a. 

 c. 



Salter.) 



Pterinopecten papjyraceus (Sow.) 



Lingula mytiloides, Sow 



Orbicidoidea nitida (Phill.) 



Productus sp 



Svirifer sd 



* 



#• (nam 



Dimorphoceras Looneyi (Phill.) 



Discites falcatus, Sow 



Gastrioceras Listeri (Mart.) 



X 



* 

 * 





Macrocheilus sp , 



Fish-remains < , 



Beyrichia arcuata, Bean 





(2) The Priorsfleld Ironstone-Measures. 



In 1859, it was discovered by W. Molyneux and Mr. John Ward 

 that the brown roof-shale of this ironstone contained a marine 

 fauna. The only locality where this has been found is at 

 Priorsfleld, Longton (16 in PI. XXXIV), and Lingula mytiloides, 

 Sow., and Orbiculoidea nitida (Phill.) were obtained, both very 

 abundantly. 



The Marine Beds below the Twist or Gin-Mine Coal. 



These remarkable horizons were, in all probability, referred to by 

 S. Lucas, who in 1865 recorded them as having been discovered by 

 a young man named Amison, of Longton, 1 although one of them 



Geol. Mag. 1865, p. 570. 



