Listen According to William Smith's principle of faunal succession all of the following are true EXCEPT A) Oldest fossils are found in oldest rock layers and younger fossils are found in younger rock layers. B) Older fossils will never be found in the same rocks as younger fossils. C) You will never find an older assemblage of fossils in a rock younger than that assemblage. D) You will never find any gaps (missing fossils); all fossils are found in a continuous sequence no matter where in the world. E) If you find a particular assemblage (of species A B and C) beneath another assemblage (X Y and Z) in one place, you will always find ABC beneath XYZ and never XYZ beneath ABC.