Invictus,
When my husband worked in the coal mines, they used a mining machine to extract the coal. Once extracted, the exposed roof will reveal fossils. They had fish, ferns, & birds and one time they brought people in with a cutting machine to extract a fossil of a dinosaur egg.

Sounds really interesting Debbyski. Looks like we've just begun learning some very critical things about the distant past of our planet. The archaeological findings of last 25 years already debunked the orthodox scientific belief that suggested the existence of human beings on American continent beginning only some 12 thousand years ago. We now know that there were humans on both North and South American continents, at least 40 thousand years ago. This finding of rain forest fossils show us even a more interesting thing about the distant past of the flora and fauna of America. Everyday, a new shocking discovery comes to newspaper headlines.