temps (durée) (1) oxygène (1) évolution (1) rétombée atmosphérique (1) âge (1) Death and burial (1) Fossils (1) Time (1) Sponges (1) Rocks (1) Prophecies (1) Particles (1) Oxygen (1) Evolution (1) Climatic changes (1) Burial (1) Biochemical markers (1) Animals (1) Age (1) Advent (1) Age (1) Evolution (1) Particles (1) corps (1)