1923 



TYPE AMMOMTES—IV 



CDXXI 



Fig. 2 



Fig. I 



Fig. la 





Ammonites serratus 

 " On shore, Port an Righ, Balintore, Ross, Scotland 

 Kimmeridge Clay " ; Geol. Survey Scotland, M 3296°' 

 S. 68, 46, 35-5, 23-5 ; 100, 48, c. 34, 22 ; max. c. 117 with part mouth 



PRIONODOCERAS OGU'ALE, nov. 

 Prionodoceratan, prionodes ; Holotype. See CL\' 



