This is a beautiful, 4.05″ wide fossil sea urchin (Clypeus plotti) that was collected near Stow-on-the-Wold in Gloucestershire, England. It comes from Middle Jurassic, Bajocian age Clypeus Grit Member of the Inferior Oolite, and is approximately 168 million years old. It has been prepped free from the rock it was found in and comes with an acrylic display stand.
While these urchin fossils sparked mild curiosity, it wasn’t until scientific discovery progressed that geologists realized these poundstones were not only weights but evidence of ancient oceans that once covered England.














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