1914 YORKSHIRE TYPE AMMONITES-II 



CV 



Fig. i 



Fig. 2 



Ammonites mutatus, Simpson, 1855 

 Jermyn St. Museum, No. 26,406 (Clarkson Coll.), Holotype x 1.06 

 Fig. 1, Side view ; Fig. 2, Peripheral view (somewhat crushed) 



DEROCERAS MUTATUM, Simpson sp. 



