Wayne Wurtsbaugh
Registered: January 2000 Posts: 511

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Fossil invertebrates in Swan Peak Quartzite (Ordovician)400-500 m NNW of Tony Grove Lake. The photo is approximately 16" (0.4 m)across.
Limnology - The study of inland waters (geology, chemistry, physics and biology).
Photo: 17 July 2010
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