Page 190 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)
P. 190

Mammal teeth










       The rise of mammals                              Like a modern wolf or                Smilodon








                                                        dog, this animal had long
                                                        canine teeth for catching
                                                        prey and tearing them apart.


                                                             Smilodon’s teeth
                          Canis dirus
                                                             had sharp tips and
                                                              bladelike edges for
                                                            biting deep into prey.




            Gomphotherium











                                              The lower tusks were flattened like
                                                 spades and may have been used
                                                   for stripping bark from trees.



                                                                                                  The canine teeth
                                                                                                  had deep roots to
                                                                                                  anchor them in
                                                                                                  the cat’s skull.

                                                                                The
                                                                             enormous
                                                                         saber teeth
                                                                         of Smilodon were
                                                                           up to 11 in

                                                                           (28 cm) long.
                                                     The front teeth of this
                                                     plant-eating giant wombat
                          Diprotodon
                                                     nipped together to bite
                                                     through plant and leaf stems.
           One distinctive feature of a mammal is that          what humans have. But the teeth of most
            it has several types of tooth in its mouth.         mammals are modified to suit their diet. The
              The basic arrangement is several nipping          dire wolf, Canis dirus, had longer canines for
               incisor teeth at the front, four pointed canine   seizing prey, and some of its cheek teeth were
                teeth adapted for gripping and tearing, and     shearing blades for slicing meat. Saber-toothed
                flattened cheek teeth for chewing. This is      cats like Smilodon had huge canine teeth,





   US_188-189_Mammal_teeth.indd   188                                                                            23/04/18   6:16 PM
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