HISTORICAL REVIEW 5 



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

 rochelonia. 



Anomodontta. 



Order Therosuchia. 



Suborder Paretasauria. 

 Gorgonopsta. 

 Ditwcephalta. 

 Deuterosauria. 

 Placodontia. 

 Thertodontia. 

 Lycosaurta. 

 Cynodontia. 

 Gomphodontia. 

 Endothiodontta. 



{Theromora?) 

 Pelycosaurta. 

 Cotylosaurta. 

 Order Therochelonia. 



Suborder Dicynodontia. 

 Ktstecephalta. 



Proganosauria or Mesosauria. 

 Nothosaurta. 

 Protorosauria. 



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

 cation: 



"i" Ordre 



Theromorphes (Anomodontes sens, lat.) 

 I" Sous-ordre Cotylosauriens (Pareiasauriens) 

 2* Sous-ordre Procolophoniens 

 3* Sous-ordre Theriodontes 

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



In Zittel's "Grundziige der Paleontologie" (70) the Cotylosaurta is regarded as 

 a synonym of Seeley's Paretasauria with the families Pariotichidce, DiadectidcE, and 

 Deuterosaurtd<t. 



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

 He gives the following classification: 



Order Cotylosaurta. 



Family Elginida-. 



Paretasaurida. 



Diadectida. 



Partottchida. 



The Cotylosaurta 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 amphicoelous; ribs 

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



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

 the Order Cotylosaurta" (41), in which the family Otocaelidce was added. A third 



