1911 



YORKSHIRE TYPE AMMONITES XXXI Xc 



Fig. I 



Fig. 2 



XiPHEROCERAS SCORESBYI, SiMPSON SP., 1843 



Geol. Survey Mu.seum, No. 23616, ex Lycett coll., Topotype 

 Fig. I, Side view ; Fig. 2, Peripheral view 



XIPHEROCERAS SCORESBYT, Simpson sp. 



