1912 



YORKSHIRE TYPE AMMONITES 



Fig. I 



Fig 2 





^^"H- 



Ammonites denotatus, Simpson, 1855 



Sedgwick Museum, Cambridge (Leckenby Coll.), Holotype 



Fig. I, Perij)heral view ; Fig. 2, Apertural view ; both x 0'85 



ARIETITES DENOTATUS, Bean-Simpson sp. 



