1914 



YORKSHIRE TYPE AMMONITES— II XCIV 



Fig. i 



lg. 2 



Ammonites sinuatus, Simpson, 1855 



Whitby Museum, No. 160, Holotype 



Fig. 1, Side view (body chamber) ; Fig. 2, Peripheral view 



both x 0.93 



DEROCERAS SINUATUM, Simpson sp. 



