1927 



TYPE AMMONITES— VI 



DCCViA 



^'^- ^ ^^ 



Fig. I 

 X 0-88 



Ammonites planicosta 



Lyme Regis, Dorset ; Lower Lias, [planicosta bed] 



S.B. Coll. 4460, purchased ; bituberculate form 



S. 70, 30, c. 34(24), 50 ; 108, 31, c. 31(27). 49'5 ; 226, 20-5, c. 22(20), 46 



XIPHEROCERAS BINODULATUM, NOV. 

 Asteroceratan, planicosta ; Holotype. See DCXXXII 



