Many sedimentary rocks, like siltstone or limestone, contain fossils, the remains, usually the hard parts, of dead animals or plants that were buried by deposited sediment.
(Many sedimentary rocks, like siltstone or limestone; contain; fossils) (dead animals or plants; were buried; by deposited sediment)
Many sedimentary rocks, like siltstone or limestone dead animals or plants
contain were buried
fossils
by deposited sediment