1926 



TYPE AMMONITES— VI 



DCLXI B 



Fig. I 



Fig. 2 



Fig. 3 



COSMOCERAS DUNCANI 



" Summertown Brickyard, Oxford ; C. C. Gaddum Coll. No. i S." 



S- 67, 43, 31, c. 22 ; 125, 36, 28, 32 ; max. c. 130 ; SI. 30, 46.5, 63, 34 



Fig. I, slight runcination, fig. 2 venter rounded 



BIKOSMOKERAS DEFICIENS, Nov. 

 Kosmoceratan, subtense ? ; Holotype. See DCXXV 



