1911 



YORKSHIRE TYPE AMMONITES 



XXV 



Fig. I 



Fig. 2 



Ammonites depressus, Simpson, 1843 



Whitby Mu.seum, No. 247, Holotype 



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



AMALTHEUS DEPRESSUS, Simpso.n sp. 



