In 1856, he was appointed professor of paleontology at the University of Vienna, and in 1861 was appointed professor of geology. He gradually developed views on the connection between Africa and Europe. Eventually, he concluded that the Alps to the north were once at the bottom of an ocean, of which the Mediterranean was a remnant. Suess was not correct in his analysis, which was predicated upon the notion of "contractionism"—the idea that the Earth is cooling down and, therefore, contracting. Nevertheless, he is credited with postulating the earlier existence of the Tethys Ocean, which he named in 1893. He claimed in 1885 that land bridges had connected South America, Africa, India, Australia, and Antarctica. He named this ancient broken continent Gondwanaland.