1926 



TYPE AMMONITES— VI 



DCLXI A 



Fig. 1 X i'o6 



Fig. 2 N.S. 



COSMOCERAS DUNCANI 



" Summertown Brickyard, Oxford ; Oxford Clay 

 " Exact position unknown ; C. C. Gaddum Coll. No. i S." 



BIKOSMOKERAS DEFICIENS, nov. 

 Kosmoceratan, subtense ? Holotype. See DCXXV 



