1913 



YORKSHIRE TYPE AMMONITES— II LXXIV 



Fig. 2 



Fig. i 



Ammonites nitescens, Young & Bird, 1828 



Whitby Museum, No. 256, Holotype 

 Fig. 1, Side view; Fig. 2, Apertural view 



SEGUENZICERAS NITESCENS, Young & Bird st\ 



