130 



AMPHIBIA 



CLASS II 



long. Skull rouiuled anteriorly, orbits 



in 



Fio. 218. 



Actinodon frossanU, Gaudry. Perinian ; Muse, near Antun, France. 

 Palatal aspect of skull, with lower jaws. '-2/5 (after Gaudry). 



hiiider third, anterior nares far 

 forwards, external bones 

 coarsely sculptured. Pala- 

 tines with minute teeth, 

 maxillae and premaxillae 

 with a series of large, 

 conical, vertically grooved 

 teeth. Dentine deeply 

 folded. Vertebrae rhachi- 

 tomous. Coracoid ex- 

 panded, with concave pos- 

 terior bord er; scapulalong, 

 • slender, tapering. Ventral 

 scales oat-shaped. Lower 

 Permian ; Khenish Prussia 

 and Saxony. 



Melosaurus, Chalco- 

 saurus, v. Meyer ; Zygo- 

 saurus, Eichwald ; Platyops, 

 Trautschold. Permian; 

 Russia. 



Dendrerpeton, Owen. 

 Goal Measures; Nova 

 Scotia and Bohemia. 



IVimerorhachis, Zatra- 



EryopA megacephalus, Cupe. Pcrniian ; Texas. 

 .1, Lateral aspect of skull. 1/5. jK, Portion of the vertebral column. C, Caudal vertebrae. 1/4 (after Cope). 



