Calamites

Calamities were horsetail like trees that went extinct about 250 to 360 million years ago. These plants were medium-sized trees, growing to heights of 30-50 meters and about 100-160 feet. The trunk of these trees had an appearance like a bamboo trunk while the leaves were needle-shaped. These calamities reproduced by cloning

Calamites Media

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  Calamites sp. from the Estonian Museum of Natural History.

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  The foliage (Annularia) of Calamites

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  A diagram of a pith cast of Calamites

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  Calamites from the Sedgwick Museum's collection.

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  Replica of Calamites sp. (Carboniferous, Léon, Spain), in a laboratory of practices of the Faculty of Sciences of the University of Corunna.