1926 



TYPE AMMONITES— VI 



DCLXXX 



Fig. 



Fig. 2 



^>*'^^^-A?,i 



Fig. la X 14 



Lytoceras cornucopia ; B. Thompson, 1891, cit. spec. 



"Brit. Association Report, Geol. p. 6 ; Catesby, Northamptonshire 



" Up. Lias, Fish Bed, latescens zone ; B. Thompson Coll." 



S. 32-5, 40, 34-5, 34-5 ; 59, 41, 35-5, 35. SI. subcompact 



Crenulate ribs fine, approximate, equal, dividing 



CRENILYTOCERAS FORMOSUM, nov. 

 Harpoceratan, crenatum ; Holotype. See DCLXV 



