i 



CARINATAE RATIJAE 



\ 



CHEliYL'RIi-AE 



TESTODlTVIIDAe \ I / 

 1 flJPHJDIA 



■f 



c 



R 



E 

 T 



1 A 

 C 

 E 

 

 U 



Modern Binds 



ODONTORriPiE ODOIMTOUCAE 



rooT^edRu-c<r Toothed Bil-c(s 



PYTHONOMORPHA/ 

 TRIONYCH/DflE I , j 



I 



Ichth 



y^rnis 



\_z 



"ijesiJCToi-nis 



CHELOIMIDAE 

 CROCODILlpAE 



MYDME 



iVfe: 



LACERTIL, 



lA 



/\NC<EI^T\BI J?D^ 

 \/ 



C ROCODIL ES \ TiLBXtiS / LIZ/>RPS» 



/ 



/ 



SAURIJRA 



\^^ tELEOSAURIDA£ 



\ BIWOSAURIA \ PTER05AURIA 



\ I J^ 



"TLE5I0SAlJRID/i£/ 



THE-RoVoDA 



MAMHALIA 

 \ 



3)TJ\r0 5A,UR.IA. \ t 



ANOHoDONTIA 



N0TH05A1JRIOAE 



ICHTHYOPTdRTGll 



FFlTCOSAURl/v 

 8fast-llKe 3au.fcaix 



X 



1/ / 



--RHYIMCHOCEPHAL/\ 



Primitive Sa-vi-iaii 



aTEGOCEPH/AIA 

 primiftv/e "Batrackiaii 



CROSSOPTERVGII '<ftji, 



DJPMOl 

 Amt5hil>ian-TiiK 



CPrimlllvfe ShM-K) "'TROSELACHII--, 



Fig. 1 — Showing probable avian ancestry. 



