"Piltdown Man"? Not exactly. I am reading "Color, a Natural History of the Palette," by Victoria Stanley. It's a history of artists pigments, and so far I've read about pigments used in cave paintings and rock paintings in Australia, India, Lebanon, China, Mongolia, Germany, France, Greece, Mexico. Why not Great Britain?
England, Scotland and Wales were connected to the mainland of Europe by a land bridge at the time, so why shouldn't the cultures be similar?
http://www.amazon.com/exec/obidos/tg/detail/-/0812971426/qid=1089926146/sr=1-18/ref=sr_1_18/104-5930455-4616758?v=glance&s=books
The artists would either spray-spit the pigment onto their ersatz canvas *or* blow it out of a hollow bone or reed.
The omnipresent "hand prints" were made with that technique as were some of the more delicately shaded animals.
You can still buy "mouth powered" airbrushes to this day.
I spat this out one day:
and a matching jacket, the next.
Boy, did my lips ever hurt afterward.....:)
[just kidding...I cheated and used a modern Iwata and a Badger MillionAire]....:-D
Sorry for the flash glare.