1926 



TYPE AMMONITES— VI 



DXXb 



Fig. I X 13 



Fig. 2 X 084 



Fig. la X 13 



Olcostephanus TRIPLICATUS 

 " Okus Quarry, Swindon, Wilts ; Mus. Pract. Geol. 32394 " 

 With inner whorls showing multicostate (virgatite) stage 

 Virgatite condition lasts till c. 35 mm. ; bradypalingenesis ? 



KERBERITES KERBERUS, S. Buckman, 1924 

 Behemothan (7), kerbenis ; Plesiotype. Cf. CCCLV 



