368 AN INTRODUCTION TO THE STUDY OF FOSSILS 



1. Briefly define Reptilia. What is the significance of the 

 name ? 



2. Name some ways in which the Reptilia represent an ad- 

 vance upon the Amphibia. 



3. What is their geologic range? 



4. What were their past habitats ? Their present habitats ? 



5. Name the Hving orders into which the class Reptilia is 

 divided ; the extinct orders ; give under each (a) their habitat, 

 (b) a living and a fossil example where possible. 



6. In what respects is the order Rhynchocephalia a general- 

 ized order ? Why is a generalized form regarded as primitive ? 



7. How do we account for the survival of the very primitive 

 Hatteria ? 



8. What is the significance of the name Anomodontia ? Of 

 Theromorpha ? 



9. How do you distinguish the Sauropterygia and the Ichthy- 

 opterygia ? What indication of a gizzard-like compartment 

 to the stomach of the former ? 



10. What indications of evolution do you note among these ? 



11. Briefly define the order Dinosauria. What do we know 

 concerning their external ornamentation ? How ? 



12. Give the geologic range of the Dinosauria. 



13. Amongst fossil vertebrates what is the chief means of 

 telling a carnivorous form from a vegetable feeder ? Which 

 is the earlier type ? 



14. Describe an example of a carnivorous dinosaur ; three 

 examples of vegetable-feeding dinosaurs. 



15. How did the probable amount of food eaten by a Bron- 

 tosaurus compare with that required by an elephant ? 



16. Given only the footprints of an animal, what would be 

 your procedure in making a restoration of the animal which 

 produced it ? 



17. How may such bizarre forms as Stegosaurus and Tricera- 

 tops be accounted for ? 



18. Give the distinguishing characters of Pterosauria, and the 

 significance of the name ; their size and geologic range. 



19. How do Pterosauria resemble birds? How differ? 



20. Define Crocodilia ; Chelonia. Give a living example of 

 each. 



21. Distinguish the three divisions of the Squamata. 



