sedimentary
Lepidodendron Fossil in Sandstone
Lepidodendron (Lycophytina, Lepidodendrales)
Hardness: 6-7 (sandstone matrix), Color: Brownish-red to tan, Luster: Dull/Earthy, Crystal Structure: None (clastic sedimentary), Cleavage: None
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Physical properties
Hardness: 6-7 (sandstone matrix), Color: Brownish-red to tan, Luster: Dull/Earthy, Crystal Structure: None (clastic sedimentary), Cleavage: None
Formation & geological history
Formed during the Carboniferous period (approx. 300-360 million years ago) in swampy, equatorial river delta environments where giant scale trees were buried by sediment.
Uses & applications
Scientific study, educational museum displays, and private fossil collecting.
Geological facts
Lepidodendron grew up to 100 feet tall and was a major contributor to the earth's coal deposits. The distinctive 'scaly' pattern is actually the leaf scars left behind as the tree grew.
Field identification & locations
Identify by looking for rhythmic diamond-shaped or linear scale patterns on the surface of sedimentary rocks. Commonly found in coal-bearing regions of North America and Europe.
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