400 



PROCEEDINGS OE THE GEOLOGICAL SOCIETY. [Feb. 29 



LlTHOLOGY. 



No. 



45. Dark-grey limestones 

 Dark shales 



Thickness. 



Organic Eemains. 



feet. 



44. Grey limestone. 



Dark shales. 

 43. Grey limestone 



Dark shales 



42. Bluish limestone 80 



41. Thirteen or fourteen lime- 

 stone-bands, with irregu- 

 lar surfaces ; some nodu- 

 lar, with partings of clay 



and shale 75 



From six to eighteen beds, 

 comprising 20 inches of 



stone 70 



Fourteen beds of limestone 

 and clay 



40. 



39 



IM 



CO" 



F 



38. Eight beds of limestone 



and clay 



37. Thirteen beds of limestone 

 and clay ; the limestones 

 irregular, water-worn, 



and nodular 65 



Dark laminated shales . . . 

 36. Grey limestone. 

 Dark shales. 



35. Greyish limestone 60 



34, Ten beds of shales and 

 limestone; septaria in 

 the lower beds. 

 33. Thin grey limestone. 

 Thick dark clay. 

 Thin band of limestone. 

 Dark clay. 



Thin band of limestone 



Thick dark shales. 



30-25. Six beds of limestone, 



alternating with six 



tlhcker beds of clay . . . 



' 24. Light-coloured limestone. 



Dark-coloured shale. 

 23. Light-coloured limestone. 

 Dark shale. 



22. Thick White Lias 40 



21-12. TwelvebedsofWhite 

 Lias, separated by thin 



bands of clay 35 



11,10. Four beds of lime- 

 stone, becoming thin 

 and rubbly beneath, 

 and nodular at the base 30 

 9. Gotham marble ......... 25 



32. 

 31. 



50 



43 



Ichthyosaurus communis, Conyb. 

 Gryphcea incurva, Sow., and Penta- 

 crinus tuberculatus, Mill. 



Ichthyosaurus communis and Am. Co- 



nybeari. 

 Pinna Hartmanni, Ziet., and Gryphcea 



incurva, Sow. 



Pholadomya glabra, Ag., and Lima, 

 n. sp., with large ribs, Gryphma in- 

 curva, Sow., and Ehynchonella va- 

 riabilis, Schl. 



Pholadomya glabra, Ag., and Lima 

 gigantea, Sow. 



Pecten textorius, Schl., Pholadomya 

 glabra,Ag., andPleurotomaria simi- 

 lis, Sow. 



Lima pectinoides, Sow., and Cardinia 

 ovalis, Stutch. 



Pholadomya glabra, Ag., Ehyncho- 

 nella variabilis, Schl., and Ostrea. 



Ostrea. 



Pinna Hartmanni, Ziet v and TJnicar- 

 dium cardioides, Phil. 



Pecten textorius, Goldf., and Phola- 

 domya glabra, Ag., Modiola Hil- 

 lana, Sow., and Avicula (small). 



