1913 



YORKSHIRE TYPE AMMONITES— II LXXIII 



Fig. 2 



Fig. i 



Fig- 3 



Fig. 4 



Fig- 5- 



Hfe 



£ £v»$ss 



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Ammonites luridus, Simpson, 1855 

 Sedgwick Museum, Cambridge (Leckenby Coll.), Holotype 

 Fig. 1, Side view ; Fig. 2, Peripheral view ; Fig. 3, Apertural view 

 Figs. 4, 5, Suture lines ( x 2.5) 



BEANICERAS LURIDUM, Simpson sp. 



