© Craven & Pendle Geological Society

Rootlets in Seat Earth

Fossil plants may not be as common as fossil animals but nevertheless their importance in Carboniferous stratigraphy must not be under estimated.  Great dense areas of tropical forest dominated NW Europe.

Stigmaria is part of the root system associated with the magnificent Lepidodendron, perhaps the best known of Pennsylvanian plants.  Lepidodendron possesses the characteristic diamond pattern on the bark.  Sigilliaria is the name given to the branches of Lepidodendron.  In Stigmaria the fossil is associated with seat earth (fossil soil).  Lying above a seat earth you may normally find a coal seams.