Description:Stigmaria is the fossilised root of a giant clubmoss which grew in Coal Measures swamps. The break down of these and other plants formed coal. Many fossils, including this one, have been found in coal mines.
Griff No.4 Mine, Nuneaton, Warwickshire
Smaller relatives of these Carboniferous giants can still be found growing in wet areas of many countries, including Great Britain and Europe