1926 



TYPE AMMONITES— VI 



DCXXXIX B 



X 0-85 



Ammonites rotundus 



Chapmans Pool ; S.B. Coll. 4368, in situ 



Kim. Clay," Nodule Bed = Portlandian Lydite Bed, Bucks 



S. (222, 28, 40, 50) ? ; thickness to height, 142 : 100 



LYDISTRATITES GIBBOSUS, Nov. 

 Para virga titan, lyditicus ; Holotype. See DCV 



