1920 



TYPE AMMONITES— 111 



CLb 



Fig. i 



X o-6 



A . mammillate Sonninia 

 Fig. 2. Hollow keel, constricted by lateral grooving, strong at A : 

 a mere ridge of keel at B ; S.B., ex J.B. Coll. 1181 ; S. 202, 33, 

 28 (24), 40 ; max. c. 250. X, last si. 



PAPILLICERAS PAPILLATUM, nov. 

 Bajocian, sauzei, Genotype, Holotype 



