1921 



TYPE AMMONITES— VI 



DCXCIX 



Fig. I 



r^: 



Fig. 2 



Fig- 3 



Dactylioceras helianthoides, Yokoyama, 1904 



(Jur. Amm. ; Journ. Sci. Coll. Tokyo, xix, 16 ; vi, 4, lectotype) 



Barrington Quarry, Somerset ; Upper Lias, Bed 6 ; M.P.G. Coll. 38013' 



S. 26, 30, 49-5, 49-5 ; 48-5, 28, 33, 45-5 ; size 54 ; max. c. 60 



XEINODACTYLITES HELIANTHOIDES, Yokoyama sp. 

 Harpoceratan, Harpoceratoides [helianthoides) ; G.T, See T.A. vi, 41 



