Beginner Gardening: Rock Swap #2, 1 by jmorth
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Image Copyright jmorth
In reply to: Rock Swap #2
Forum: Beginner Gardening
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jmorth wrote: Sorry for failure to identify my pic, it's an Exogyra ponderosa, an oyster from the upper Cretaceous. It measures 6X3X3.25". It's 65 to144 million years old, probably toward the lower end. Pic shows stack of them. |