ILLUSTRATIONS 



FIG. PAGE 



1. Zoological regions on north polar projection 24 



2. Geological epochs and types of climate 29 



3. Jaws of Shark 34 



4. Jaws of Pickerel 35 



5. Hinged tooth of Pike 36 



6. Jaws of Iguana 38 



7. Jaws of Alligator 39 



8. Morphology of the mandible and auditory ossicles 43 



9. Genetic relationships of Cynodonts 47 



10. Restoration of skull of Bauria eynops 49 



11. Restoration of skull of Sesamodon browni 49 



12. Molar teeth of Diademodon mastacus 50 



13. Mandibles of Triassic Protodonta 54 



14. Mandibles of Jurassic Triconodonta 56 



15. Molar tooth and mandible of Amphitherium 58 



16. Molar teeth of Dryolestes -.-;.. 60 



17. Dentition of Phascologale flavipes . 70 



18. Left aspect skull of Phascologale flavipes 71 



19. Dentition of Sarcophilus ursinus 73 



20. Dentition of Thylacinus cynocephalus 75 



21. Dentition of Thalacomys minor 77 



22. Dentition of Petaurus breviceps 79 



23. Dentition of Trichosurus vulpeeula 82 



24. Dentition of Phascolarctos cinereus 84 



25. Dentition of Potorous tridactylus 86 



26. Dentition of Dendrolagus inustus 87 



27. Dentition of Macropus bennetti 87 



28. Dentition of Phascolomys ursinus 90 



29. Dentition of Talpa europa 97 



30. Dentition of Hylomys suilla dorsalis 99 



31. Dentition of Tupaia tana 101 



32. Dentition of Chrysochloris trevelyani 102 



33. Dentition of Potamogale velox 104 



34. Dentition of Tarsius borneanus 110 



35. Dentition of Microcebus murinus Ill 



19 



