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6.3: Extinct SVPs
Opening the book…
Figure \(\PageIndex{1}\): In the first image there is fossil from a Lepidodendron tree on display at the State Museum of Pennsylvania. This extinct lycophyte genus was perhaps one of the dominant features in the landscape during the carboniferous period. The second image is an artist's reconstruction of Lepidodendron, showing dichotomous branching of the roots and shoots. Microphylls and pendant strobili emerge in the canopy. Photo of the fossil by Jstuby at en.Wikipedia, Public domain, via Wikimedia Commons. Artist's reconstruction by Tim Bertelink, CC BY-SA 4.0, via Wikimedia Commons.Figure \(\PageIndex{2}\): In the first image there is fossil from a Sigillaria (possibly a root fragment) that is on display at State Museum of Pennsylvania. The second image is an artist's interpretation of what these plants looked like during the Carboniferous period. Photo of the fossil by Jstuby at en.Wikipedia, Public domain, via Wikimedia Commons. Artist's reconstruction by Tim Bertelink, CC BY-SA 4.0, via Wikimedia Commons.Figure \(\PageIndex{3}\): The first image shows fossils of Calamites, an extinct relative of Equisetum, from the Sedgwick Museum's collection. The second image is an artist's interpretation of what these plants looked like. There is a large rhizome under the surface of the soil. The tree-like horsetail might have been 60 feet tall and has whorled branches with small leaves. Fossil photo by Verisimilus, CC BY 3.0, via Wikimedia Commons. Artist's reconstruction by Falconaumanni, CC BY-SA 3.0, via Wikimedia Commons.
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