PEDIGREE OF VERTEBRATES, 205 
9. Mammals 
Mammalia 
8. Birds 
Aves 
7. Reptiles 
Reptilia 
5. Sea-dragons | 
Halisauria —.-——- 
Osseous fish Amnion Animals 
Teleostet 4. Mud-fish Amniota 
Dipneusta 
Ganoid fish 6. Batrachians 
Ganoidet Amphibia 
a ie lene Loo 
Vertebrate animals breathing through limgs 
Amphipneumones 
Eg pe es Se 
Primeval fish Selachii 
3. Fishes Pisces 
Double-nostriley Amphirrhina 
2. Round-mouthed 
Cyclostoma 
aetna SRO 45 TA Be 
Single-nostriley | Monorrhina 
Animals with skulls  Craniota 
1. Tube-hearted 
Leptocardia 
m As Cc id ie —”?—_l.I Eee ESO 
Sea-barrels Skulleless Animals 
Thaliacea Acrania 
| Pertebrate Animals 
Vertebrata 
CC 
TicnuateAnimals 
Tunicata 
