HISTORICAL REVIEW 5 



In 1895 Seeley (60) proposed his two new orders the Therosuchia and The- 

 rochelonta. 



Anomodontia. 



Order Therosuchia. 



Suborder Paretasauria. 

 Gorgonopsia. 

 Dtnocephaha. 

 Deuterosauria. 

 Placodontia. 

 Thertodontia. 

 Lycosauria. 

 Cynodontta. 

 Gomphodontia. 

 Endothtodontia. 



( Theromora.) 

 Pelycosaurta. 

 Cotylosauria. 

 Order Therochelotua. 



Suborder Dicynodontia. 

 Kistecephaha. 



Proganosauria or Mesosauria. 

 Nothosauria. 

 Protorosaurta. 



In 1895 appeared Bernard's "Paleontologie" (3) giving the following classifi- 

 cation: 



"i» Ordre 



Theromorphes (Anomodontes sens, lat.) 

 i er Sous-ordre Cotylosauriens (Pareiasauriens) 

 2 C Sous-ordre Procolophoniens 

 3 e Sous-ordre Theriodontes 

 4 C Sous-ordre Dicynodontes (Anomodontes s. str.)" 



In Zittel's "Grundzuge der Paleontologie" (70) the Cotylosauria is regarded as 

 a synonym of Seeley's Paretasauria with the families Pariotichidee, Diadectidce, and 

 Deuterosauridce. 



In 1896 (38, 39) appeared Cope's paper "On the Reptilian Order Cotylosauria." 

 He gives the following classification : 



Order Cotylosauria. 



Family Elgin idee. 



Pareiasauridce. 



Diadectidce. 



Pariotichidee. 



The Cotylosauria is defined as follows: 



"Quadrate bone united by suture with the adjacent elements. Temporal fossa 

 overroofed by the following elements: Postfrontal, postorbital, jugal, supramastoid, 

 supratemporal, quadratojugal. Tabular bone present. Vertebrae amphiccelous; ribs 

 one-headed. Episternum present. Pelvis without obturator foramen." 



Later in the same year came Cope's second paper, "Second Contribution to 

 the Order Cotylosauria" (41), in which the family Otoccelidce was added. A third 



