1912 



YORKSHIRE TYPE AMMONITES 



LXVIb 



Fig. I 



Fig. 2 



Ammonites simpsoni, Bean-Simpson, 1843 



Whitby Museum, No. 813, Holotype 



Fi},'. I, Apertural view, x o'8 ; Fig. 2, Approximate delineation of 



two septal margins, nat. size 



AETOMOCEKAS SIMPSONI, Bean-Simpson sp. 



