The book endorses catastrophism and non-Darwinian evolution. Thus, his catastrophism theory incorporated a version of Old Earth creationism or Gap creationism. It is argued that certain features of evolution support creationism's catastrophism (cf. Themes running through the Oera Linda Book include catastrophism, nationalism, matriarchy, and mythology. In the 1950s, Immanuel Velikovsky propounded catastrophism in several popular books. The discovery of fossils of extinct species was explained by theories such as catastrophism. The novel entwines the genres of dystopia and catastrophism. D'Orbigny a disciple of Georges Cuvier was a notable advocate of catastrophism. He was an opponent of Georges Cuvier's catastrophism. This theory was in direct contrast to the geological theory of Catastrophism. The results triggered Cuvier into creating catastrophism. Darwin's gradualistic account was also opposed by the ideas of saltationism and catastrophism. The view that creole languages are the product of catastrophism is heavily disputed. In this latter work he expounded a scientific theory of Catastrophism. Many individuals believed in catastrophism to allow room for religious beliefs.