11. Tooth Attachment Thecodont - set in sockets Pleurodont - attach to side of jaw Acrodont - attach to occlusal surface

12. Mammal Teeth Incisors Simple Used for pincers - grasping and picking Modified Chisels - rodents Tusks - elephants

13. Mammal Teeth Canines First tooth in maxilla, when present Tend to be long Commonly consist single cusp with one root Used for stabbing and holding prey Enlarged canines - musk deer, walruses, baboons

14. Mammal Teeth Premolars Vary in shape and size shrew - tiny peg massive crushing organ - wolf Usually smaller and simpler than molars Deciduous

15. Mammal Teeth Molars Vary in size, shape, and function Completion eruption delayed

22. Tusks Walrus tusk - upper canines Elephant tusk - incisors