130 



AMPHIBIA 



CLASS II 



long. Skull rounded anteriorly, orbits in hinder 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 border; scapula long, 

 slender, tapering. Ventral 

 scales oat-shaped. Lower 

 Permian ; Rhenish Prussia 

 and Saxony. 



Melosaurus, Chalco- 

 saurus, v. Meyer ; Zygo- 

 saurus, Eichwald ; Platyops, 

 Trautschold. Permian; 

 Russia. 



Dendrerpeton, Owen. 

 Coal Measures; Nova 

 Scotia and Bohemia. 



Trimerorhachis, Zatra- 



FlG. 218. 



Aetinodon frossardi, Gaudry. Permian ; Muse, near Autun, France 

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



Fm 219. 



Eryops megacephalus, Cope. Permian ; Texas. 

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



