An extinct genus of trilobites (marine arthropods) that flourished during the Ordovician and Silurian periods, known for their distinctive segmented oval bodies.
From Greek 'kalymma' meaning veil or covering, referring to the protective rounded carapace that covered these ancient creatures' bodies like a cloak.
Calymene trilobites are so common in fossil records that they're among the most frequently found trilobites in collections—if you've ever seen a trilobite fossil at a museum, there's a very good chance it was a Calymene.
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