1921 



TYPE AMMONITES— III 



CCLX 



Fig. 2 



Fig. i a 



Fig. i 



I'"'g- 3 



Ammonites omphaloides ; T. H. Huxley, 1865, cit. spec. 



Cat. Foss. Coll. Mus. Pract. Geol., p. 241 ; " Weymouth, Dorset 



" Oxford Clay," bluish calcareous ; Geol. Surv. Engl. Coll., 30371 



S- 51, 43. 63 (57). 3i'5 ; 68, 43, 53 (45), 30 ; max. c. 79. R., slightly restored 



SAGITTICERAS SAGITTA, S. Buckman, 1920, p. 19 

 Argovian, pre-Goliathiceras ; Genotype, Holotype. Cf. CXCVIII 



