Fossil Sea Urchin Echinoid Replica STL

A fossil sea urchin, or echinoid, with a domed, rounded-pentagonal shell. Five petal-shaped bands radiate from a small central disc at the top, and the whole surface is dotted with small raised tubercles where the spines once attached. The hard shell of a sea urchin is called a test. Fossil echinoids are common in Jurassic and Cretaceous rocks, and in parts of Europe they were collected for centuries as folk charms, sometimes called shepherd's crowns or fairy loaves. This is an original digital…

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