CRETACEOUS PTSCES. 



105 



Name. 



Formation. 



Locality. 



81 



PlagiostOjMI — cont. 



PtyCHODUS POLYGYRUS — C07lt. 



Teeth - - - - - - Upper Chalk 



Ptychodus majijiillaris, Ag. 

 Tooth ..--.- Lower Chalk 



„ (12) - - - ' - - Chalk 



Upper Chalk 



Oldbury Hill. 

 Beer Quarry, S. 



Devon. 

 Near Lyme. 

 Clay Hill, near 



Frome. 



jMaidstone. 



- Warminster. 



Sp.? tooth (12) 



Ptychodus rugosus, Eg. 

 Tooth 1 Chalk - , Oldbury. 



PXYCHODtJS ? GIBBERULUS, Ag. 



Fin rays , Gault 



,. ' - - - - - - I Lower Chalk 



Folkestone. 



Dover. 



Maidstone. 



Fin rays 



Ptychodus ? articulatus ?, Ag. 

 Lower Chalkl ? 



LTpper Cambridge. 

 Greensand. ? 



NOTIDANUS MICRODON, Ag. 



- I Upper I Cambridge. 

 Greensand. .'' 



- Chalk - I Burwell. 



Teeth 



„ (12) - - - - 



CORAX HETEROUON, ReUSS (C. APPENDICULATUS, Ag.) 



Tooth (12) - - - - 



Chalk - I Dover. 



Upper Chalk Gravesend. 

 ,, - Lewes. 



CORAX HETERODON, ReUSS (C. FALCATUS, Ag.). 



Teeth 



., (12) 

 Tooth - 



} Upper I Warminster, 

 I Greensand. 1 



,, - i Devizes. 



Lower Chalk Lewes. 

 Chalk - I Kent. 

 Upper Chalk! Bromley. 

 ,, - ■ Gravesend. 



CoRAX HETERODON, Reuss. (C. Kalpii, Ag.). 

 Tooth ----- - I Upper Chalk Gravesend. 



