38 



TYPE AMMONITES— IV 



Mar. 



Correlation 

 Pseudovirgatitan 



"pallasianiis" 



scruposiis 



Sequence VI — Kimmeridge, Dorset 

 (Salfeld, p. 206) 



Strata 



Fauna 



1. \Miite Septarian Band Gruppe des Per. pallasi- 



aniis 



2. Clay above Oil Shales 



3. Oil Shales 



Gravesian 



irius 

 gravesiana 



Physodoceratan 



longispiniini 

 pseudomutabilis 



4. Top Ledge 



5. Clay 



6. Cattle Ledge 



7. Clay 



8. Yellow Ledge 



9. Clay 



[Hen Cliff Beds] 



10. Maple Ledge 



11. Clays, 



[Gaulter's Gap Beds] 



[" Pseudovirgatites scru- 

 posiis" (J.P.)] 



Gravesia irius, G. gravesi 



A ulacostephanns eiidoxiis, 

 A. pseudoniutahilis, 

 Asp. longispinum, (but 

 not .1. acanthicum nor 

 A. caletanurn), Cardioc. 

 anglicum, C. krausei 



Sequence MI — Ringstead Bay, Dorset 

 (Salfeld, p. 204) 



