1921 



TYPE AMMONITES— III 



CCLVIIb 



Fig. 2, X 0-25 



Fig. I, X «'22 



'' Ammonites giganteus " 



S.B. Coll. 3485 ; without outer quarter whorl 



S- 310, 35, 33, 38 ; 527, 31, 28, 44 ; 56 ribs 



S. 644, 29, 23-5, 46 (PL CCLVIIa). Cf. CCXXXI 



BRIAREITES POLYMELES, NOV. 

 Portlandian, Titanites ; Genotype, Holotype 



