‘Well, we are now about 120 years after Darwin, and knowledge of the fossil record has been greatly expanded…ironically, we have even fewer examples of evolutionary transition that we had in Darwin’s time. By this I mean that some of the classic cases of Darwinian change in the fossil record, such as the evolution of the horse in North America, have had to be discarded or modified as a result of more detailed information.’

Dr David Raup (Curator, Field Museum of Natural History, Chicago), ‘Conflicts between Darwin and Paleontology’. Field Museum of Natural History Bulletin, vol. 50 (1), 1979, p.25.