204 THE HISTORY OF CREATION, 
SYSTEMATIC SURVEY 
Of the 4 Main-classes, 9 Classes, and 26 Sub-classes of Vertebrata. 
Gen. Morph. vol. ii. Plate VII. pp. 116-160. 
I. Skull-eless (Acrania), or Tube-heartey (Leptocardia). 
Vertebrata without head, without skull and brain, without centralized heart. 
1. Skulleless I. Tube-hearted tI. ee 1. Amphioxus 
Acrania Leptocardia 
II. Animals with skulls (Craniota) and with thick-walled hearts (Pachycardia). 
Vertebrata with head, with skull and brain, with centralized heart. 
Sub-classes 
of the 
Classes 
of the 
Skulled Animals, 
Main-classes 
Systematic Name 
of the Skulled h 
of the 
Animals. Skulled Animals. Sub-classes. 
2. Single: 2. Hags, or Mucous 2. Hyperotreta 
cw ingit- | II. Round mouths Fish (Myxinoida) 
Posteiley } Cyclostoma 3. Lampreys, or 8. Hyperoartia 
Monorrhina Pride (Petromyzontia ) 
Ill. Fish 4, Primeval fish 4. Selachii 
Pisces | 5. Ganoid fish 5. Ganoides 
6. Osseous fish 6. Teleostei 
IV. Mud-fish ‘ 
ae { 7. Mud-fish 7. Protopteri 
3. Pon-am- 8. Primeval 8. Simosanria 
muonate V. Sea-dragons dragons 
Anamnion- Halisauri 9. Snake-dragons 9. Plesiosauria 
ata 10. Fish-dragons 10. Ichthyosauria 
11. Mailed Batra- 11. Phractamphibia 
VI. Batrachians chians 
Amphibia 2. Naked Batra- 12. Lissamphibia 
chians 
3. Primary reptiles 13. Tocosauria 
4, Lizards 14. Lacertilia 
5. Serpents 15. Ophidia 
6. Crocodiles 16. Crocodilia 
7. Tortoises 17. Chelonia 
8. Flying reptiles 18. Pterosauria 
4. Amnion 9. Dragons 19. Dinosauria 
Animals 0. Beaked reptiles 20. Anomodontia 
Amni a . Long-tailed 21. Saururze 
pees i Paedieds  Fan-tailed 22. Carinates 
3. Bush-tailed 23. Ratitz 
4, Cloacal animals 24. Monotrema 
oe 5. Pouchedanimals 25. Marsupialia 
6. Placental animals 26. Placentalia 
