Top 7 Fossil Fun Facts about Orthoceras
By Chelsea Reed
Orthoceras! It’s the world’s most popular fossil. These striking white creatures rest inside dark limestone, frozen in time. You may have seen them in a rock store before.
An orthoceras is an ancient mollusk that lived 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, its aragonite shell turned into calcite and fossilized. Let’s explore more fun facts about this fascinating marine fossil! (more…)