Here are just a few, I'll be back with 'plenty' more.
The Taung child in South Africa. This fossil was once rejected as a human ancestor. It has since been accepted.
The Piltdown Hoax. A human skull and Orangutan’s jaw were altered to make evolution look credible.
The Nebraska Man. In 1917, geologist Harold Cook found a tooth. Scientists believed it was from an undiscovered ape, an ancestor of humans. However, in 1925 scientists discovered that the tooth actually belonged to an extinct pig.
Neanderthals. The original descriptions of the Neanderthal fossils were distorted to make the fossils seem more primitive than they are.
Ramapithecus. This species was once considered a human ancestor, but is now known only as a relative of the orangutan.
East African Volcanic Dating. There is a heated debate over the age of a volcanic layer that is associated with human fossils in East Africa.
Australopithecines. Paleoanthropologists Richard Leakey and Donald Johanson disagree on where the newer Lucy-type finds were located.
The Force of Change. There are ongoing conflicts about whether predation, hunting, or cooperation caused human evolution.
Lewin says this about the theory of human evolution:
In the physical realm, any theory of human evolution must explain how it was that an apelike ancestor, equipped with powerful jaws and long, daggerlike canine teeth and able to run at speed on four limbs, became transformed into a slow, bipedal animal whose natural means of defense were at best puny. Add to this the power of intellect, speech, and morality, upon which we “stand raised as upon the mountain top” as Huxley put it, and one has the complete challenge to the evolutionary theory.
And pals of Walter Veith no less. Haven't the Germans locked him up yet?