Table of Contents 



Chapter Page 



1 . The Past 1 



2. Mammals 15 



3. Birds 56 



4. Reptiles 1 04 



5. Amphibia Ill 



6. Fossil Fishes 114 



7. Living Fishes 118 



8. Mollusca 127 



9. Insects 143 



10. Butterflies 209 



11. Moths 224 



1 2. Crustacea 233 



13. Worms 241 



14. Protozoa 247 



Alphabetical Index 255 



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