Executive gift or exquisite decor! Ammonites have a snail like structure. Location: Timor. Geological Period: Permian Age 250 million years old. The Permian-Triassic extinction event, informally known as the Great dying, was the 'mother of all mass extinctions' that occurred 251.4 million years ago. Because so much biodiversity was lost, the recovery of life on earth took significantly longer than after other extinction events. Possible reasons for this extinction include large earth impacts, increased volcanism, or sudden release of methane hydrates from the sea floor. Known as the 'architect' stone! It provides insight and one sees the whole picture from conception to use. Broadcasts needs & actions required for world survival. Protective stone encourages & supplements survival by adding stability & structure to one's life. Transforms negativity into even fluid energy. Alleviates depression & is used in treatment of degenerative disorders & complaints of the lungs & limbs. Supports birthing process. Healing heightens dependant on age of ammonite.