Orthoceras Fossils Self Standing

🦑🐌 Ammonite & Orthoceras Fossils 🐌🦑 $55 Each ~ 3 available of the Orthoceras Self Standing fossils. Did you know Orthoceras is the world's most popular fossil. These striking white creatures rest inside dark limestone, frozen in time. An Orthoceras is an ancient mollusk that lives in the Ordovician Period. At that time, the earth was mostly covered in water. It had a soft squid like body inside a cone shell. Over time, it's aragonite shell turned into Calcite and fossilized.