Oweons fisk 

 TeleoaUi 



Ganoid fish 

 OanoidsM 



( 131 ) 



TABLE XXL 



Pedigree of Vertebrates. {Of. Plate XV.) 



8. fEammals 

 Mammalia 



Single-lnnged 

 Monop nen mones 



Double-Inn ged 

 Dypneumones 



7. Birds 

 Aves 



I 

 6. Reptiles 



Repti/ia 



Mud -fish 

 Protoptm'i 



^mnionMnimBls 

 Amniota 



I 

 5. ISattarfjiafts 

 Ampliibia 



4. fHutJ^fisfj 

 Dipneusta 



Primitive fishes Selaohii 

 3. Fishes Pisces 



©oufaU^nostrillrt 

 Amphirhina 



 — Lampreys Hags 



Petromytontes Myxinoid"- 



2. Round-mouths 



Cylostoina 



Sea-equirts 



Ascidico 



Sea-barrels 



Thaliacea 



IHantlcTJ ^nimali 

 Tuuicata 



5>ingIf'n0striIIctJ Monorhina 

 ,S)kuiIrti'llutmal;a Craniota 



1. Tube-heaited 

 Leptoco/rdia 



Acrania 

 Vtxithxatts 

 Vertebrata 



C!)ortia^^nimate 

 Chordouia 



Worms 

 Vermes 



