1927 



TYPE AMMONITES— VII 



DCCXIX 



Fig. i 



Fig. 2 



Ammonites crassescens, Simpson, 1855, Holotype 

 Foss. Y.L., p. 55 ; " Whitby, Yorkshire, [Upper Lias] 

 ' Whitby Mus., 135 ; " S. 49, 26, 28, 53 ; 61, 22, 32, 57 



NODICXELOCERAS CRASSESCENS, Simpson sp. 

 Harpoceratan, falcifernm. See XCI 



