GASTEROPOD FAUNA IN THE MILLSTONE GRIT OF SCOTLAND. 



335 



and a new form named by Mr Bolton Tellinamorpha Hindii. His paper is published 

 in the Quart. Journ. Geol. Soc, vol. lxiii. p. 445. 



The annexed vertical sections illustrate the order of succession of the strata at 

 the localities where the lamellibranchs were obtained ; the one at Greenfoot Quarry- 

 has been kindly supplied by Mr Hinxman, the second and third on the river Avon 



60_ 



so_ 



w-wm 



wmw< 



°-pwwi 



Chiefly 

 Fireclay. 



Gap with Sandstone. 



Coal 10". 



Gap. 



Ironstone with Productus. 



Gap. Probably 

 includes a good 

 deal of Sandstone. 



Impure ferruginous Limestone or \ 



Shale, with Ironstone nodules. Marinefossils. / 

 Fireclay. 



Curdly IKONSTONE, calcareous in parts, impure. 

 \Clay shale with marine fossils. 



Ctenodonta latvirostris. 

 Edmondia excentrica. 



„ sulcata. 

 Limatulina alternata. 

 Nuculana attenuate/,. 



„ Icevistriata. 

 Grammatodon tenuistriata. 

 Posidoniella Icevis. 

 Protoschizodus curtus. 

 Pterinopecten papyraceus. 



,, Whitei 



Sanguinolites occidentalis. 

 Schizodus Wheeleri. 

 Tellinomorpha Hindii. 



/Bituminous Shale with fish scales and plant remains 



(Horizon of Levenseat Oilshale). 

 Castlecary Limestone, formerly quarried and mined. 



Fig. 3. — Section on the Banks of the River Avon, East of the Railway Viaduct a mile N. of 

 Manuel Junction. One-inch Map 31. Scale, 1 inch = 30 feet. 



by Mr Clough, the fourth at Tor wood Glen by Mr Tait, and the fifth in Bilston 

 Burn by Mr Clough, and I owe a debt of thanks to Dr Lee for references to the 

 discovery of Prothyris by Drevermann in Germany. 



It is certain that the fossiliferous horizon indicated in the shorter section lies 

 above those shown in the larger one, but, owing to the variability of the beds 

 and an obscure fault, its exact distance above these horizons is doubtful. It cannot, 



