CLA SSIFICA TION OF VER TEBRA TA 1 8 



2. Sub-order KHYNCHOCEPHALI, Guenther. 

 Ehynchosaurus. Keuper, England. 

 Hyperodapedon. Keuper, England ; India. 

 Homoeosaurus. Upper Jura, Germany. 

 Sphenodon. New Zealand. 



3. Sub-CLASS THEKOMOKPHA, Cope 



Stereospondylous, amphicoelous. Pubes and ischia fused 

 together. 



Humerus with entepicondylar foramen. Quadrate fixed. 

 Eibs with capitulum and tuberculum. 

 Pentadactyle walking limbs. 



1. Order Anomodontia, Owen. Walking limbs. Sacrum 

 with five to six vertebrae. 



Triple occipital condyle. Without intercentra. 

 Teeth absent, or restricted to one pair of upper tusks. 



Oudenodon. L. Trias, S. Africa ; Permian, Ural ? 



Dicynodon. L. Trias, S. Africa ; Bengal ; Elgin. 



2. Order Theriodontia, Owen, s. Pelycosauri, Cope. With 

 intercentra. Two or three sacrals. 



Mostly with differentiated incisors, canines, and molars. 

 Triple occipital condyle. 



Lycosaurus. Trias, South Africa. 



Cynodraco. Trias, South Africa. 



Galesaurus. Trias, South Africa. 



Clepsydros. Trias, U.S.A. 



Dimetrodon. Trias, U.S.A. 



3. Order Pareiosauri, Zittel. Teeth in uniform series. 

 Two sacrals. With triple occipital condyle. Caudal intercentra. 



Pareiosaurus. L. Trias, South Africa. 

 Elginia. L. Trias, Elgin. 



4. Order Placodontia, von Meyer. Skull only known. 

 Palate with large, broad teeth. Marine, European. 



Placodus. Muschelkalk, Germany. 



4. Sub-CLASS CEOCODILIA, Wagler 



Stereospondylous. Quadrate fixed. Eibs with capitulum 

 and tuberculum. Two sacral vertebrae. Pentadactyle walk- 



