[VadeRetro]

Within a few decades, Piltdown Man was looking like an odd, very isolated data point.

Roger Lewin quotes Sherwood Washburn as saying

"I remember writing a paper on human evolution in 1944, and I simply left Piltdown out. You could make sense of human evolution if you didn't try to put Piltdown into it."

Piltdown Man, by Richard Harter.

[Doctor Stochastic]

Piltdown is an example of a designed entity rather than an evolved one.