AM 10 ID EI 



33 1 



Allolepidodus, Deeke ; Trias, Europe. Heterolepidotus, Eg. ; Ptycholepis, 

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



Fig. 308. 

 Eugnathus orthostomus, Ag. ; Lower Jurassic, Dorsetshire ; restored. (After A. S. Woodward.) 



Thiol.; Osteorhachis, Eg. (Fig. 307); Etirycormus, Wagner; Eugnathus, 

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

 and Cretaceous, England. Lophrostomus, Eg. ; Cretaceous, England. 



Fig. 309. 



Caturus furcates, Ag. : Upper Jurassic, Bavaria ; restored, without scales. 

 (After A. S. Woodward.) 



Family Pachycormidak They are similar in outward shape to the 

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

 which separates the premaxillae, especially in Protosphyraena. The 



Hypsocormus insignis, Wagner; Upper Jurassic, Bavaria; restored, without scales. 



(After A. S. Woodward.) 



branchiostegals 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, 



