<p>Fossil of <i>Calamites</i>-species, Carboniferous.  Villers-Saint-Ghislain, Mons region, Belgium.  Found by Tim Verfaillie on November 11, 2005.
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Picture is 30 cm wide.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Tbc" title="User:Tbc">Tbc</a> assumed (based on copyright claims).
No machine-readable source provided. Own work assumed (based on copyright claims).