PRE-JURASSIC TETRAPOES. 175 



Bolosaurus Cope. Artinskian, Texas. 



? Glaucosaurus Williston. Artinskian, Texas. 



? Palceohatteria Credner. L. Permian, Saxony. 



Pelycosaurs of undetermined position. 



Arribasaurus Williston. IT. Coal Measures, New Mexico. 

 Bathygnathus Leidy. Permian, Canada. ( ? Clepsydropid.) 



Order Deinocephalia Seeley. 



Anomodont reptiles, with unreduced quadrates. No supra- 

 temporal element. Postorbital and squamosal meeting above 

 temporal fossa. The basicraninm forming a deep wall below the 

 condyle. Glenoid cavity supported solely by the scapula and 

 coracoid in typical forms. Limbs modernised. 



Super- Family Tapinocephalid.^. 



Deinocephalia with a short skull and short mouth. 



Tapinocephalus Owen. M. Permian, S. Africa. 

 Mormosaurus Watson. ,, ,, 



Pnigalion Watson. ,, ,, 



Lamiasaurus Watson. ,, 

 Struthiocephalus Haughton. ,, ,, 

 Moschosaurus ,, 



Moschops Broom. ,, ,, 



Moschognaihus Broom. ,, 

 Taurops „ „ 



Eccasaurus ,, ,, „ 



Delphinognathus Seeley. ,, ,, 



Deuterosaurus Eichwald. Permian, Russia. 



etc. 



Super- Family Titanosuchice. 



Deinocephalia with an elongated mouth. . 



Titanosuchus Owen. M. Permian, S. Africa. 



? Ehopalodon Fischer. ,, ,, Russia. 



? Cliorhizodon Twelvetrees. ,, ,, „ 



? Dinosaurus Fischer. ,, ,, ,, 



Order Dromasauria. 



Anomodonts with very long slender limbs. Large orbits, 

 short pre- orbital and temporal region, rounded dorsal contour of 

 skull, and a T-shaped squamosal. 



? descended from Bolosauridse. 



Galechirus Broom. M. Permian, S. Africa. 



Galepus ,, „ 



Galeops ,, „ 



? Palceohatteria Credner. L. Permian, Germany. 



