1910 



YORKSHIRE TYPE AMMONITES 



XVII 



Fig. I 



Fig 2 



-^^.^ 





Fig- 3 



Ammonites belcheri, Simpson, 1843 

 Whitby Museum, No. loi, Holotype ; Fig. i. Side view ; Fig. 2, Aper- 

 tural view ; Fig. 3, Approximate delineation of suture line, x 4. 



CALOCERAS BELCHERI, Simpson sp. 



