Lepidodendron - The "scale tree" was prolific during the Carboniferous Period (360 to 286 million years ago). - http://clearlight.com/~mhieb/WVFossils/LepidoDwg.html
Lepidodendron Reconstruction - Drawing of a club-moss tree from the carboniferous and links to photographs of its fossils. - http://www.xs4all.nl/~steurh/eng/lepido.html