"The Upright Ape" is a thought provoking journey into, not only science and philosophy, but also how one thing does or does not change into something else.”

-- BookReview.com

For a book with only 260 pages, Filler manages to pack an amazing amount of information into it. ... At the same time the book doesn't suffer in terms of readability because of that. ... This is a challenging and provocative book well worth reading.”

-- afarensis at scienceblogs.com

“A compelling and well-presented analysis of the story of life. With an in-depth examination of evolutionary pioneers and their influences on today's research, Dr. Aaron Filler presents a convincing theory of evolution that will educate, stimulate, and challenge our perceptions of the history of life. I highly recommend the book not only to science students, but to readers who enjoy engaging and well-researched books that inspire debate and reflection.”

-- Tracy Roberts - Write Field Services

Did apes evolve from humans?

Sudden abrupt changes in which entirely new types of organisms come into existence almost instantaneously do not fit the model of Modern Evolutionary Theory and the Darwinian model. In this remarkable 288 page book written by Harvard trained evolutionary biologist Aaron Filler, MD, PhD, - a student of Stephen Jay Gould and Ernst Mayr - we learn how modern biological evidence finally proves that sudden non-Darwinian evolution has played a major role in a number of major events in the history of life including the origin of humans. Based on this updated biological information, Dr. Filler re-examines the latest fossil evidence to reveal that the human body form is far more ancient than has been widely accepted – emerging abruptly, apparently due to a Pax gene change -  at the time of Morotopithecus 21.6 million years ago. As a consequence, Filler argues, there is now compelling evidence that apes descended from humans and not the other way around.