It's been done before.
"So, I guess the scientists secretly built fake fossils with feathers, wishbone, claws and teeth just to trick everybody?
"It's been done before.
When and where?
metmom: It's been done before.
A Chinese peasant did that a few years, ago (actually combined two fossils IIRC), embarrassed hell out of National Geographic, but it was caught by peer review before it did any real damage.
The only other case I'm aware of is the Piltdown fraud, which may have been committed by a scientist; nobody knows who did it.