This image is of the Auracarites rotzanus plant fossil.    Picture taken at Museo di Geologia e Paleontologia Florence Italy (Universit...

  This image is of the Annularia longifolia plant fossil. The plant existed in the Carboniferous Period. Picture taken at Museo di Geol...

  This image is of the cranium and mandible of a Homotherium crenatidens saber-tooth tiger fossil. The animal existed in the Pleistocene...