1928 



TYPE AMMONITES— VII DCCLXXX1 c 



Fig. i 



Fig. 2 





ssp 



COSMOCERAS PARKINSONI J S. BUCKMAN, l88l, dt. Spec. 



Bradford Abbas, Dorset ; S.B. Coll. 3807 ; ventr. lap. 10 mm. 

 Last few ventral ribs not broken 

 Rib-length 31 mm., prim. 61%, sec. 39% ; at 42, 62%, 38% 



DUROTRIGENSIA PARKINSONI, J. Sowerby sp., 1821 

 Parkinsonian, parkinsoni ; Chorotypc See DCCLXVIII 



