1911 



YORKSHIRE TYPE AMMONITES XLIa 



Fig. I 



Fig. 2 



Ammonites compactilis, Simpson, 1855 



Geol. Survey Museum, No. 24914, ex Lycett coll., Holotype ? 



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



PSEUDOLIOCERAS COMPACTILE, Simpson sp. 



