1909 



YORKSHIRE TYPE AMMONITES 



m 



Fig. I 



Fig. 2 



Fig. 3 



Ammonitks aureus, Slmpson, 1855 



Whitby Museum, No. i07, Holotjpe; Fig. 1, Side view; 



Fig. 2, Apeiliiial view ; Fife. 3, Pait of whoii \»iih butuie-lints, x 4 



PLATYPLEUROCERAS AUREUM, SIMPSON SP. 



