The title comes from this different perception; against the linear, progressive evolution of Western Art and history, they provide us a vertical intersection, an interval of time and understanding history. (curatorsintl.org)
No disease modifying therapies are available; HD therefore follows a slow progressive evolution leading to death within 15 years of onset of first symptoms. (istem.eu)
By the early 1970s, more finds including australopithecus - like material classified as Homo habilis, made it appear that there was now a fairly substantial chain of progressive evolution from a bipedal chimp - like ancestor right through to modern man - A. afarensis, H. habilis, H. erectus, archaic H. sapiens, Neanderthal man and finally Cro - Magnon or modern man. (answersingenesis.org)