Page 136 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)
P. 136

Feathered hunters










       Dinosaurs take flight                                                     Ornitholestes     The long dinosaur








                                                                                                   tail was inherited
                                                                                                   by the first birds, but
                                                                                                   gradually reduced
                                                                                                   over time.



                                                                       Scipionyx had
                                                                       sharp teeth, unlike
                                                                       modern-day birds.

                              Scipionyx fossil




               Buitreraptor




              Epidexipteryx had long plumes
              extending from its short, bony tail,
              which was similar to that of a                                                      The unusually long
              modern bird.
                                                                                                  snout bristled with
                                                                                                  small teeth adapted
                                                                                                  for seizing and
                                                                                                  gripping prey.

                                          Epidexipteryx                                Like



                                                                                    many small
                                                                                    dinosaurs,
                                                                               Ornitholestes

                                                                                is known from just
                                                                                    a single

                                                                                      fossil.




           For decades it has been clear that the               were covered with feathers of some kind. This
           skeletons of small, long-armed theropod              means that the only difference between these
           dinosaurs like Buitreraptor are similar to           small dinosaurs and the first birds was the length
           that of the first known bird, Archaeopteryx.         of their arms and the nature of their feathers. At
           More recent fossil evidence also shows that the      first sight a small, agile hunter with fuzzy feathers
    134    bodies of many of these lightweight hunters          such as Ornitholestes might not seem very like





   US_134-135_Feathered_Hunters.indd   134                                                                       26/04/18   3:30 PM
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