1912 



YORKSHIRE TYPE AMMONITES 



LII 



Fig. I 



Fig- i 



Ammonites solitarius, Simpson, 1855 



Whitby Museum, No. 500, Holotype 



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



Fig. 3, Suture line (approximate), x 3 



PALTOPLEUROCERAS SOLITARIUM, Simpson sp. 



