﻿234 



BRITISH FOSSIL CEPHALOPODA. 



Table of the Distribution op Cephalopoda in the British Silurian 



Rocks — continued. 



Name. 



c5 

 o 



03 



a 



6 



'3 



§ 



3 f 



08 



s 



Q 



>> 



F* > 



h3 



FH 



* s? 



OJ >■ 



3 



AS . 



O a, 

 £0Q 



§| 



Fh £ 



OJ o 



o S 



Oj c 



a— 

 K3 



5 



p 



03 

 o 



s 

 s 



Brought forward 







4 1 







2 



4 



15 



8 



20 



16 



3 



8 



3 



Orthoceras 



























lineatum . 





> 



< 

















© 





var.tenui striata 





> 



< 



X 



X 



X 















bullatum . 













X 



X 



X 



X 



X 







Avelinii . 





X 























ascendens 





5 



< 











X? 











subundulatuin . 





0? > 



< 









X 





X 



X 









fretum 













X 







X 









Saturni . 





) 



<? 



X 









X 



X 











mocktreense . 







. 









© 



X 



X 









reversum . 













X? 





X 



X? 









sericeum . 



X 



X 























pertinens 





X 























vagans 

 politum . 

 audax 





X 5 

 5 

 ) 



< 

 < 

 < 

















© 

 © 





pictum 

 druidii 





> 



< 

 < 













X? 









ardvellense . 





> 



c 





















subgregarium 





X? > 



< 





X 

















gregarium 

 primsevum 





> 



< 



X 



X 



© 



X 



X 





X 

 X 



X 











var. antiquior . 

 subconicum . 





> 



< 



X? 



X 



X 







X 









circulare . 













X 



o 















truncatum 















X 



X 















excentricum . 















X 





© 



X 









imbricatum . 















X 



X 



X 



X 



X 



O 





perversum 

 ludense . 













X 



X 



X 

 X 



X 

 X 



X 

 X 











distans 















X 



X 



X 



X 





O 





baculiforme . 





















X 









omissum . 













.. 









X 









(Endoceras) 

 cochleatum . 





> 



< 



X 



X 



X 



X 





X 



X 



© 





(Actinoceras) 

 Brongniartii . 





> 



< 























festinans . 





> 



< 





















vaginatum . 









.. 



© 

















(Tretoceras) 

 bisiphonatum 









X 





X 















(Conoceras) 



























eoum .... 





X 























Cyrtoceras 



























praecox . 

 llandoveri 



X 









X 

















approximatum . 



■• 



.. 



• 



•• 



X 



X? 















Carried forward 



2 



9 2 



5 





7 



13 



29 



15 



31 



31 



6 



18 



4 



