Theriodonts and their Allies. 293 



Family : ^lurosauridae. 

 Teeth on pterygoids, and apparenti) also on palatine and 

 prevomers. A single canine in each maxillary. 

 Genus : ^Elurosauriis. 



Family : Iclidosuchida;. 

 Xo distinct postfrontals. A single canine in ea<-h maxillary. 



Genus : Ictidosuchus. 



? Familv : Deuterosaurida;. 

 Xo palatal teeth. 



Genera : Deuterosaurus. 

 Rhopalodon. 



Family : Titanosuchida?. 

 [Probably a distinct family. Characters very imperfectly 

 known.] 



Genus : Tilanosuchus. 



? Familv : Gorgonopsida?. 

 Temporal region roofed. Prevomers anch\loseci. Xo 

 palatal teeth known. 



Genus : Gorgonops. 



THERIODONTIA. 



Medium sized reptiles, with temporal region suppfirted by a 

 single lateral arch. Xo distinct postfrontals. supra-temporals or 

 quadrato-jugals. Quadrate rudimentary. A secondary palate 

 formed by the maxillaries and palatines. Prevomers small. True 

 vomer large. Trans palatines usually absent. Occipital condyle 

 double. Xo teeth in j)alate. Scapula with a distinct acromion. 

 Phalangeal formula 2, 3. 3. 3, 3. 



Family : Lycosauridae. 

 Molar teeth simple. 



Genera : Lvcosaurus. 

 ? Cynodraco. 



Family : Galesauridse. 

 Molar teeth cuspid. 



Genera : Cynognalhus. 

 Galesaurus. 



Family : Gomphognathidae. 

 Molar teeth with broad flattened crowns. 



Genera: Gomphognalhus. 

 Microgomphodon. 

 Trirachodon. 

 Diademddon. 



