Fossils are the preserved remains of ancient plants or creatures that have been infiltrated by minerals and turned to stone or the imprint of plants or creatures that have been left in stone after the stone has hardened and the creature or plant has decayed away.
History and Folklore
Stones that showed unusual indentations and patterns have always been given mystical significance by humans. Some fossils were carried as charms and some ground up into medicine.
Fossils are ancient beyond the average imagination and yet they still remain. This makes them a handy stone to carry to promote longevity and strength.
Fossils with the imprints of sea creatures align with the element of water and petrified wood carries the energy of the tree from which it first fell. Likewise, fossils of different animals represented their energy as well. Ammonite fossils or Snakestone are said to aid in raising power and opening up psychic channels.
More information online