What are all the types of fossil fuels ?

Answer 1

From Wikipedia:

"Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. "

From Answers.com / Science & Technology Encyclopedia:

"Thus, there are solid fuels (coals); liquid fuels (petroleum, heavy oils, bitumens); and gaseous fuels (natural gas, which is usually a mixture of methane, CH4, with lesser amounts of ethane, C2H6, hydrogen sulfide, H2S, and numerous other constituents in small proportions)."

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