Rapid burial is also necessary for coal and oil formation and for fossilization, otherwise the normal process of decay would completely disintegrate the organisms, even the bones.
(the normal process of decay; would completely disintegrate; the organisms) Context(the normal process of decay would completely disintegrate,List([91, 148))):(Rapid burial; is also; necessary)
the normal process of decay would completely disintegrate,List([91, 148))
the normal process of decay Rapid burial
would completely disintegrate is also
the organisms
necessary