I think coal and oil are natural materials that God put in the earth because He knew we would need them.
We have daily 100 car coal trains to feed our local power plant.
Think of the amount of plant and animal materials that would need to be compressed so densely in such a limited area to produce one vein of coal.
Think how much coal is used per day around the world, and then how much has been used in the last 150 years.
The dinosaurs would have to be livng in high rises to get that much density from dead bodies piling on top of each other to creat that coal.
And again, how does a coal mine exist 1000 or more feet underground?
Naturally occurring sedimentary layers?
And a lot of coal is found just below the surface—ie strip mining—where was the sedimentary compression to creat the coal there?
The earth produces over 100 million tons per year in organic carbon.
http://www.sciencemag.org/content/281/5374/237
If only 0.01% of that become trapped in sediment on lake and ocean beds, it equals 4 trillion tons after 400 million years.