1925 



TYPE AMMONITES— VI 



DCXXb 



Perisphinctes gorei 



Swindon, Wiltshire ; Portland Stone ; S.B. Coll. 4391 



S. 228, 25, 28 + , 61, ribs 55 ; 363, 25, 24 x, 67, ribs 59 



Max. c. 480 ; SI. 63, 64, 42 of 59 mm. whorl-breadth 



GYROMEGALITES POLYGYRALIS Nov. 

 Behemothan, polypreon ; Genotype, Holotype. Cf. GDI 



