Dr. Franz Joseph Unger (1800-1870) was an Austrian botanist and palaeontologist. He ventured outside his natural ‘comfort zone’ when he wrote Die versunkene insel Atlantis (The Sunken Island of Atlantis)^[723]. In it he supported the concept of Atlantis as a landmass in the Atlantic. This was the prevailing theory at the time, which was more fully expounded a couple of decades later by Ignatius Donnelly.