1913 YORKSHIRE TYPE AMMONITES— II LXXXVI 



Fig. i 



Fig. 2 



Ammonites nitidus, Young & Bird, 1828 



Whitby Museum, No. 2547, Holotype 

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



TRACHYLYTOCERAS NITIDUM, Young & Bird sp. 



