CHAPTER 1: INTRODUCTION TO SHARKS (EXTANT)             PAGE 1: DEFINITION             PAGE 2: SHARKS             PAGE 3: SKATES AND RAYS             PAGE 4: CHIMAERAS             PAGE 5: EXTANT ORDERS  Great white shark teeth  Specimen courtesy Canadian Museum of Nature  Cat #  NMC 89 - 0126
CHAPTER 2: SHARKS AND THE FOSSIL RECORD (EXTINCT)               PAGE 6: SHARK TIMELINE               PAGE 6a: CLADOGRAM               PAGE 7: CLADOSELACHE               PAGE 8: XENACANTH               PAGE 9: HYBODONTS               PAGE 10: NEOSELACHII               PAGE 11: MEGALODON                PAGE 11a: MEGALODON 2 Cyclobatis Fossilized ray from Lebanon  Mid-Cretaceous  Specimen courtesy Canadian Museum of Nature  Cat # 29469
CHAPTER 3: SHARK EVOLUTION (TEETH)               PAGE 12: TEETH               PAGE 13: CUTTING TEETH               PAGE 14: CRUSHING TEETH               PAGE 15: IMPALING TEETH               PAGE 16: SPIRAL TEETH  Teeth replacement (cross-section)  Drawing by Chris Moles from Stafford-Deitsch
CHAPTER 4: SHARK EVOLUTION (SENSORY)                 PAGE 17: ELECTRORECEPTION
CHAPTER 5: SHARK EVOLUTION (BIOLOGY)                 PAGE 18: REPRODUCTION
GLOSSARY LINKS
REFERENCES

copyright Brett Harris, 1999
bharris@chat.carleton.ca

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