318 VEltTEBIiATE ANIMALS. 



Order 5. — Cetacea. 

 Order 6. — Ungulata. 

 Order 7. — Dinocerata. 

 Order ^.—TUhidontia. 

 Order ^. — Tn.rndnntia. 

 Order 10. — Iti/rdcdidea. 

 Order 11. — I'mhDseidea. 

 Order 12. — Cariiivora. 

 Order 1.3. — Itodentia. 

 Order 14. — ( '/( firoptera. 

 Order 1 .'i. — liixe<i.ivora. 

 Order 16. — (^inidrxinana. 

 Order 17. — liimana. 



