1926 



TYPE AMMONITES— VI 



DCXXXIX c 



Fib. I 



Fig 2 



I 



Ammonites rotundus 



Chapmans Pool, Isle of Purbeck, Dorset 



S.B. Coll. 4368 ; max. c. 390 + 



LYDISTRATITES GIBBOSUS, nov. 

 Paravirgatitan, lyditicus ; Holotype. See DCVI 



