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Brachiopoda
Mold fossil of a brachiopod found at Pymatuning Lake on the Ohio side. What I find really interesting is how the fossil is in the rock at a perpendicular angle. I have never seen one at this angle before. The rock measures ~20 mm (.78 in) long, 18 mm (.71 in) wide and ~12 mm (.48 in ) thick. The fossil measures ~7 mm (.28 in) long, ~3 mm (.11 in) wide and ~4 mm (.15 in) deep. This fossil dates to the Devonian Period (416-359.2 million years ago).
Rocky shore of man-made lake. Pymatuning Lake. Andover, Ohio, USA
The close up photo was taken with a Digital Blue QX5 USB Miscroscope at 10x power.
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Added measurements to the description.