The picture above is a organic gemstone formed from the remains of ancient ammonite creatures. Below is a picture of a Placenticeras meeki (Böhm, 1898) ammonite fossil found in the Bearpaw Shale Formation of the Lethbridge District, Alberta, Canada. The fossil dates to the Cretaceous Period. Specimens were on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.
