( 44 ) 

 TABLE XVI. 



Systematic Survey of the most Important Stages in the Animal 



Ancestral Line of Man. 

 M N = Boundary between the Invertebrate and the Vertebrate Ancestors. 



Devonian Period 



E och 



Pcrnlian Period 



12. Salamander Fishes 

 (Uipneutta) 



4> Tailcd A 





LTriassic Period 



Mesolithic 



or { 8. Jurassic Period 



Secondary 



15. Primitive Am- 



(Protamnia) 

 16. Primitive Mam- 



Mud fish 

 ' ( I'rotoptera) 

 Siren (1'roteus) 

 and Axolotl 



(Siredonj 

 Water-newt 



(Triton) 



1 Between Tailed 

 Amphibians and 

 Beaked animals 



Beaked animals 



