AMIO1DEI 



Allolepidodtis, Deeke ; Trias, Europe. Heterolepidotus,~Eg.; Ptycholepis, 

 Ag. ; Caturus, Ag. (Fig. 309) ; Triassic and Jurassic, Europe. Callopterus, 



Fin. 308. 

 l-:tlii.athu.s orthostoiimx, Ag. , Lower Jurassic, Dorsetshire ; restored. (After A. S. Woodward.) 



Tliiol. ; Osteorhachis, Eg. (Fig. 307) ; Earycormus, Wagner ; Eugnathus, 

 Ag. (Fig. 308) ; Jurassic, Europe. Neorhombolepis, A. S. W. ; Jurassic 

 and Cretaceous, England. Lophtoetorma, Eg. ; Cretaceous, England. 



FIG. 300. 



i 'iiini-n.-tfin-catits. A#. ; Upper Jurassic, Bavaria ; restored, without scales. 

 (After A. S. Woodward.) 



Family PACHYCORSIIDAE. They are similar in outward shape to the 

 last ; but the ethmoid and vomer combine to form a prominent rostrum 

 which separates the premaxilhie, especially in Protosphyraena. The 



FIG. 310. 



ii.-i iiifii/hi", Wanner: Upper Jurassic, Bavaria; restored, without scales. 

 (After A. S. Woodward.) 



liranchiostegals become very numerous ; pointed teeth arm the jaws, 

 vomer, and splenial ; in Hypsicormus there is a very large pair on the 

 last two bones. The fulcra are vestigial. The scales thin" and rhombic, 



