I was hoping for nano-gaps, but whatever. Anyway, you don't have to reach back to Piltdown. Once upon a time, some Chinese farmer jammed two new (and real) fossil bird progenitors together to make one, but instead of one fossil and two gaps, you got two fossils and three gaps when people realized what he did. This is evidence that all fossil evidence of bird evolution is fake. Or something.
Yes. It's the "Pierre the Bridge Builder" interpretation.