6. Selachia.

7. Dipneusta.

8. Sozobranchia. (Amphibia with permanent gills.)

9. Sozura. (Tailed Amphibia.)

*10. Protamnia.

*11. Promammalia.

12. Marsupialia.

13. Prosimiæ.

14. Menocerca. (Tailed apes.)

15. Anthropoides.