1913 YORKSHIRE TYPE AMMONITES— II LXXIX 



Fig. i 



F'g- 3 



Fig. 2 



Ammonites latescens, Simpson, 1855 



Whitby Museum, No. 311, Holotype 



Fig. 1, Side view ; Fig. 2, Peripheral view ; Fig. 3, Suture-line, x 3. 



PSEUDOGRAMMOCERAS LATESCENS, Simpson sp. 



