﻿BRITISH FOSSIL CEPHALOPODA. 



235 



Table of the Distribution of Cephalopoda in the British Silurian 



Rocks — continued. 











>> 



sA, 

















Name. 



o 



o 



<s 



a 



6 



'3 

 is 



3 



pq 





p, o 



3 



■§•3 

 



t£ a 

 ^3 



O 'u 



M h3 



01 o 



00 



o 

 m 



o 



Eh 



p. 



05 

 <D 



a 



< 



Brought forwnrc 



2 



9 



25 



7 



13 



29 



15 



31 ! 



31 



6 



18 



4 



Cyrtoceras 



























corniculum . 













X 



X 









O 





isca . 



•• 











X 















contrarium . 













X 



X 







.. 



O 





plebeium 















X 















compression . 









X 









X 



X 









magnum . 













X 





X 



X 









fortiusculum . 

















X 













intermedium. 













X? 





X 











uranus 

















X 



.. 



.. 









equisetum 















.. 



X 











sonax. 







X 





















macrum . 







X 





















r ever sum . 

















X 











inasquiseptum . 







X 





















subarcuatum . 







X 























extricatum . 













,, 





X 











multicameratum 























.. 



.. 



O 



scoticum . 







X 





















alternatum . 







X 





















(Piloceras) 



























(invaginatum) 





[x] 























POTERIOCERAS 



























appioximatum 





., 



X 





















intortum . 







X 





















GOMPHOCERAS 



























sequale 









X? 





X 



X 













corona 

















X 













crater 















X 



X 













ellipticum 



















X 



.. 



.. 



0? 





pyriforme 















0? 



0? 



X 



0? 









obovatum 



















X 











eta 



















X 











gratum . 



















X 





• • 









cinctum . 

















X 



X 











neglectum 



















X 











amygdala 

















X? 



X 



•• 



•• 



i © 





Phragmoceras 



























prius . 







X 





















ventricosum . 







0? 





X 



X 



X 



X 



X 









imbricatum . 















X 



X? 



.. 



.. 









obliquum 















X 



X? 











subexternum 







.. 









'X 













arcuatum 















X 



X 











externum 





•• 













X 











Carried fon 



var 



d 2 



9 



34 



8 



14 



36 



27 



50 



34 



6 



26 



5 



2 h 2 



