Surprise! There's a trilobite fossil inside! This is an Eldredgeia venustus trilobite from the Devonian period approximately 400 million years ago. Sometimes fossils get encased in muds and clays forming concretions in the host rock. This piece comes with both the fossil and the cast. Trilobites from this location in Bolivia are becoming increasingly rare so grab one before they are "extinct".
Approx. 2"L x 1.25"W x 1.25"H
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