PISCES FROM THE POTTOX BEDS. 



121 



VERTSBRilTA FROM THE NEOCOMZASr BEDS AT POTTOia. 



PISCES. 



Name. 



Formation 



Localitv. 



CHIM^ROIDEI. 



IscHYODUs Egertoni, Ag. 



Left ramus ot" mandible - - -I Neocomian i Potton. 

 „ maxilla - - - - - I ' „ - I ,, 



IscHYODiis TowNsENDii, Buckl. 



Right ramus of inaudible, anterior 

 portion. 



„ maxilla, fragment 

 Left 



Right and left preniaxilla; 

 Fragment of „ - - 



„ mandible, gen. ? 



„ left maxilla, gen.? 



N 



eocomian 



Potton. 



Dorsal spines 

 Teeth 



PLAGIOSTOMI. 

 Hybodus Sp. 



- I Neocomian i Potton, 



Defences 



Sphenonchus hamatus, Ag. 

 - I Neocomian 



Potton. 



Teeth 



ACRODUS, Sp. 



- Neocomian I Potton. 



ASTERACANTHUS ORNATISSIMUS, Ag. 



Dorsal spines 



Dorsal spines 



Neocomian 



Potton. 



Teeth 



Tooth 



Teeth 



AsTERACANTHUS VERRUCOSUS, Eg. 



- ; Neocomian ] Potton. 



Strophodus, Sp. 



- I Neocomian , Potton. 



Ptychodus Polygy'rus, Ag. 



- 1 Neocomian 1 Potton. 



GANOIDEI. 



Lepidotus (sfh.erodus) gigas, Ag. 



Neocomian 



41639 



Potton. 



Brick Hill. 

 I 



