The rocky ceiling of a coal mine is ornamented everywhere by exquisite tracery, inimitale representation of the delicate frond of ferns. Remove a scale of rock and we discover an exquisite fossilized fern. Fossil ferns such as these are often found in association with coal seams. Fossil of scale tree, Lipidodendra.

Fossilized Coal Ferns

The rocky ceiling of a coal mine is ornamented everywhere by exquisite tracery, inimitale representation…