1926 



TYPE AMMONITES— VI 



DCXXXIII 



k 



Pig. I 



Fig. 2 



S.S.B 



Ammonites cordatus 



Horton Brickyard, Horton-cum-Studley, Oxfordshire 



Upper Oxf. Clay, limonitic cast ; S.B. Coll. 3595, purch. 



27, 41, 41, 28 ; 56, 46, 37-5 (33), 27 ; ribs 19 ; (EL, O). Li, 



More ribs than Card, cardia, and different proportions 



CARDIOCERAS COSTICARDIA, nov. 

 Cardioceratan, cardia ; Holotype. See DCXVI 



OV 



