1921 



TYPE AMMONITES— III 



CCXII 



Fig- 4 



Fig 3 



Fig. i 



Fig. 2 





Ammonites alligatus, (Bean MS.) Leckenby, 1859, Holotype 

 O.J.G.S., XV, 9 ; 11, 2 ; Scarborough Castle Rock, Yorkshire 



Kelloway Rock ; bluish-grey calc, ool. grains rare 

 S. 44, 28-5, 29-5, 48 ; 60 ribs ; max. c. 53. See PI. CXXXIX 



ALLIGATICERAS ALLIGATUM, Bean-Leckenby sp. 

 Vertumniceratan, vertumnus. [Aug. 1923] 

 [Oct. 1927] 



