Compressed trunk
of the horsetail tree Calamites.Piesberg (Osnabrück, Germany), Upper Carboniferous
Near to the chisel is a whorl of leaves.
Length of the stem 2 m.
Compressed trunk
of the horsetail tree Calamites.
Piesberg (Osnabrück, Germany), Upper Carboniferous
Near to the chisel is a whorl of leaves.
Length of the stem 2 m.