102 



FOSSIL ESTHERLE. 



monarch of this tribe. From the same place as the last, where it occurs sparingly in every 

 part of the sandstone and shale, that contains vegetable remains. 



"Only these two species of shells have yet been discovered in this interesting spot, 

 and they are certainly of sufficient geological importance to deserve recording. Depressed 

 specimens of Cypris concentrica are found also in the lower sandstone and shale at 

 Cloughton and Haiburn Wyke." 



The order of succession of the shales and sandstones beneath the Cornbrash on the 

 Yorkshire coast has been given in detail by Dr. T. Wright, F.G.S., in the ' Quart. Journ. 

 Geol. Soc./ vol. xvi, p. 31, thus : 



l. 

 2. 

 3. 



4. 

 5. 

 6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 10. 

 17. 

 18. 

 1 8c. 



m. 



19. 



20. 

 21. 



22. 

 23. 

 24. 

 25. 



26. 



Ft. In, 

 Cornbrash. 



Carbonaceous sandstone 40 



Siliceous rock 4 



Grey clays 6 



Grey sand-rock 8 



Brown sand-rock 2 



Whitish and carbonaceous sandstones, with stems 



ofPlants 4 



Carbonaceous sandstone, with stems of Plants ... 9 



Sandy shales 10 



Grey limestone. Fossil iferous, marine 18 



Carbonaceous sandstone, with Plant-remains 6 



Carbonaceous shale 1 



Dark-grey clay 4 



Sandstone and clay, carbonaceous 2 



Sandy clays. Unto distortus and Plant-remains ... 3 



Carbonaceous shale. Plant-remains 1 



Carbonaceous shales and sandstones 1 



Carbonaceous shale. TTniones and Plant-remains . 4 



Shale and ironstone 2 



Sandstone 1 



Shale (Gristhorpe Plant-bed). Estheria concen- 

 trica 2 



Sandstone 12 



Ferrugino is sand-rock. Pholudomya, Cardium, 



Trigonia 5 



Sandstone 4 



Ironstone-rock. Lima, Serpu/a 2 



Shale and sandstone. Plant-remains 4 



Dark-grey clay. Plant-remains and Estheria con- 

 centrica 10 



Oolitic rock (Millepore-bed). Fossiliferous, marine. 10 



) Upper shales and sandstones. 



Lower shales and sandstones. 



and more. 



Dr. Wright remarks, bed No. 25 (the 2Gth beneath the Cornbrash of the Yorkshire 

 coast) is "a dark-grey clay, containing the remains of Plants in its upper portion, and 



