Calamites cistii Calamites cruciatus Calamites goeppertii Calamites multiramis Calamites ramosus Calamites rectangulus Calamites sachsei Calamites schuetzeiformis Calamites schulzii Calamites sickowii Calamites suckowi Calamites is a genus of extinct arborescent (tree-like) horsetails to which the modern horsetails (genus Equisetum) are closely re...
Found on
http://en.wikipedia.org/wiki/Calamites
originally, a stem fragment of a fossil plant prominent during the coal age, the Carboniferous Period (from 286 million to 360 million years ago). ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/c/5
No exact match found.
