Mold fossil of a brachiopod. The rock measures ~53.5 mm(2.10 in) wide, ~44.5 mm (1.75 in) tall and ~37 mm (1.4 in) thick. The fossil measures ~23 mm (.90 in ) high and ~35 mm (1.3 in) wide). This fossil dates to the Devonian Period (416-359.2 million years ago).
Rocky bottom of man-made lake. Pymatuning Lake. Andover, Ohio, USA
Close up photo taken with a Digital Blue QX5 USB Microscope at 10x power.