A few years ago, some one was excavating a swamp when the discovered some bones.  Assuming that the bones were those of an ancient Mastodon, scientists swarmed on the scene.  But some old timer said that it was really just an elephant and that they would only find the front half of it.  He went on to say that when he was a boy, a circus elephant died and that the circus dumped the front half of the elephant in the swamp keeping the back half to feed the lions.  They never found the back half of the elephant.