Rarely, conditions of fossilization are so good that we get to see soft parts, but it does happen (Archaeopteryx feathers;
(conditions of fossilization; are; so good that we get to see soft parts; T:Rarely) (we; to see; soft parts) (it; does happen; )
conditions of fossilization we it
are to see does happen
so good that we get to see soft parts T:Rarely
soft parts