1928 



TYPE AMMONITES— VII DCCLXXXIIIa 



Fiff. i 





x 0-385 



Deroceras submuticum 



Kilmersdon Colliery, Radstock, Somerset ; Mid. Lias 



Armatus bed ; S.B. Coll. 1956 ; body ch. x about a 



S. 179, 30, 35, 42 ; 284, 25, 37, 54 ; size c. 287 ; max. c. 300 



APODEROCERAS TRIORNATUM, now 



Deroceratan, leckenbyi ; Holotype. See LXXI1 



