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Lepidodendron
Lepidodendron (also known as the "scale tree") is an extinct genus of primitive, vascular, arborescent (tree-like) plant related to the Lycopsids (club mosses). They are sometimes called giant club mosses. They sometimes reached hights of over 180 ft (54 m), and the trunks were often over 6 ft (1.8 m) in diameter.
Lepidodendron had tall, thick trunks that rarely branched and were crowned with a cluster of narrow leaves. The leaves were spirally-arranged and ended in cones. The closely packed diamond-shaped leaf scars left on the trunk and stems as the plant grew provide some of the most interesting and common fossils in shales and accompanying Carboniferous coal deposits. These scars were likely left by leaves or small branches as they dropped off.
Lepidodendron lived in swampy areas during the Carboniferous period. By the Mesozoic era, the giant club mosses had died out and were replaced by smaller club mosses.
Lepidodendron is one of the more common plant fossils found in Pennsylvanian (Carboniferous) age rocks. They are closely related to another extinct genus: Sigillaria.
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To view or edit this article at Wikipedia go to http://www.wikipedia.org/wiki/Lepidodendron |
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